Woolsthorpe Manor

The past year and a half has been challenging for everyone. For some, it has resulted in the death of loved ones, loss of jobs, ill health, depression and anxiety. Yet, for others, it has been an opportunity to spend time with family, take up new hobbies, redecorate the house, and learn something new. Perhaps someone has even made a scientific discovery. At least, that is what Sir Isaac Newton achieved during the Great Plague of 1665-1666. Known as his Annus Mirabilis or ‘Year of Wonders’, Newton spent lockdown at his childhood home in the countryside, where he filled his time learning and discovering new things about the world.

On Christmas day in 1642, Isaac Newton was born at Woolsthorpe Manor in Woolsthorpe-by-Colsterworth, near Grantham, Lincolnshire, to Hannah Ayscough (1623-79). Christmas day babies were special, but Newton was also considered blessed because he was born three months after the death of his father, also called Isaac. When Hannah remarried the rector, Barnabas Smith (1582-1653), from North Witham, three-year-old Newton remained at Woolsthorpe Manor with his maternal grandparents.

Woolsthorpe Manor was a yeoman’s farmstead, which principally reared sheep. While Newton was not adept at farming, the environment and landscape inspired his curious mind to observe and experiment with nature. His quiet, contemplative personality set Newton apart from other boys his age, particularly when he started attending the Grammar School in Grantham at the age of 12.

Rather than travel several miles to and from school, Newton lodged with Mr Clark, an apothecary. Mr Clark’s daughter remembered Newton as “a sober, silent, thinking lad who never was known scarce to play with the boys abroad.” Newton paid little attention to his lessons, preferring to study the workings of mechanical devices, such as the newly built postmill nearby. As soon as he had an opportunity, Newton constructed a working model of the postmill from wood.

Visitors can see an example of Newton’s postmill model at Woolsthorpe Manor, which now belongs to the National Trust. The house has been refurbished since Newton lived there, but recent discoveries suggest some sections remain as they were in the 17th century. On a wall in the kitchen, a faint carving of a postmill suggests Newton drew on the walls as a child. Other carvings have also been discovered around the room.

Newton’s notebooks reveal some of the experiments he undertook at school and home during his childhood. These included staring at the sun until he almost went blind and squeezing his eye-ball with a large blunt needle to see what would happen. He also had a keen interest in astronomy, time and mathematics.

At 17, Newton’s mother removed him from school and set him to work on the farm. Rather than look after the sheep, Newton spent his time reading or designing waterwheels and such-like. A disastrous nine months persuaded Newton’s mother to send him back to school, where he gained enough knowledge to enter the University of Cambridge. In June 1661, at the age of 18, Newton left his rural lifestyle behind in exchange for the city.

History books about the Great Plague tend to focus on London, but most major cities across England were affected. In 1665, Charles II (1630-85) tried to halt the spread of the plague by imposing a lockdown to prevent people from mixing. This was not too dissimilar from Boris Johnson’s decisions in 2020. Likewise, if someone came into contact with a plague victim, they had to quarantine for 40 days, painting a red cross on their door to warn others to stay away. Those who could, fled to the countryside where the population was much lower than in the cities.

Newton retreated to the safety of his childhood home in the summer of 1665. Despite being away from his university studies, Newton’s lockdown resulted in some of his best theories that changed the course of science. “For in those days, I was in the prime of my age for invention & minded Mathematics & Philosophy more than at any time since.” (Isaac Newton)

One of Newton’s aims was to understand how light worked. He observed that glass used in chandeliers sometimes changed white light into a rainbow of colours. With a glass prism, Newton experimented with light in his bed chamber. By boring a hole into the wooden shutters, Newton let a thin beam of light into his darkened room. When he placed the glass prism in the line of light, the colour changed, creating a rainbow pattern on the opposite wall. To ascertain whether the prism caused the light to change colour, Newton placed a second prism in the path of a single-coloured beam coming from the first prism. He noted the colour remained the same, thus proving that the glass had not altered it. From this experiment, Newton inferred that white light was made up of several colours: red, orange, yellow, green, blue, indigo, and violet.

Renovations to the house removed any evidence of Newton’s experiments, but his notebooks reveal the measurements of the room he used. Newton recorded the room had a width of “22 feet from the south-facing shutter to the wall”. Only one room in the manor house fits this description and has since been known as Newton’s chamber. For the benefit of visitors, the National Trust has filled the room with furniture from the 17th century and decorated the white walls with diagrams from Newton’s notes. Despite the carved drawings in the kitchen, it is unlikely that Newton wrote his findings on the wall. To demonstrate Newton’s experiment, a torch shines a light onto a prism, which produces a rainbow on the wall above the bed.

During his time at Woolsthorpe Manor, Newton contemplated the workings of the universe. While sitting under an apple tree outside the house, he observed an apple fall to the ground. This incident sparked questions, such as, why did the apple fall straight down and not to the side? Many who have heard this story believe this was the moment Newton “discovered” gravity, yet gravity was hypothesised by Galileo Galilei (1564-1642) in 1604 and confirmed by Italian Jesuits, Grimaldi (1618-63) and Riccioli (1598-1671), in the 1640s.

The apple incident encouraged Newton to explore the theory of gravity in greater depth. He theorised that gravity was a key component in the working of the universe. Through numerous calculations, Newton developed a universal law of gravitation, which explained that all things with mass or energy are attracted to one another. Newton expanded upon theories suggested by Ismaël Boulliau (1605-94) and Giovanni Borelli (1608-79), who claimed the planets in the solar system are drawn towards the sun. Newton continued to explain that all planets, stars, galaxies, and even light are attracted to one another.

Newton did not tell the story of the apple tree until much later in life, leaving many people wondering if it actually happened or whether it was an example of gravity in action. Nonetheless, the incident was immortalised by Newton’s biographer, William Stukeley (1687-1765), who wrote, “the notion of gravitation… was occasion’d by the fall of an apple, as he sat in contemplative mood.” Legend or not, there is an apple tree standing by Woolsthorpe Manor, which has enticed pilgrims and tourists to the area since Newton’s death in 1727.

An apple tree has stood at Woolsthorpe Manor for at least 400 years. Many visitors ask if the tree is the same one Newton sat under, but the answer is not straightforward. In 1820, a storm blew the tree down, prompting many people, including students at Cambridge, to attempt to preserve it. Parts of the broken tree were used to make wooden trinkets and such-like, but the roots remained embedded in the ground. From these roots grew another tree, which remains at Woolsthorpe today. Dendrochronologists have determined it is technically the same tree, and the Tree Council has listed it as one of 50 Great British Trees.

Since the National Trust took over the property, the apple tree has been regularly pruned and looked after. It is a Flower of Kent tree, which produces green-red cooking apples. This type of tree was first mentioned in the 15th century and, despite its name, originated in France. At certain times of the year, the apples are used in the cafe at Woolsthorpe Manor.

Not only are these apples famous for their association with Isaac Newton, but they are also rather rare. After almost losing the tree in the storm of 1820, a graft was taken by Reverend Charles Turnor (1768-1853), who propagated the tree at Belton Park in Lincolnshire. During the 1930s, the Fruit Research Station at East Malling in Kent took grafts of the tree at Belton and gave them to the Cambridge Botanical Gardens. In the 1970s, Kew Gardens in London grew apple trees from the stock in Cambridge, one of which stands outside the Physics Department at the University of York.

Newton’s laws of motion and the law of universal gravitation, which derived from the incident with the apple tree, were recorded in his most important written work, Philosophiæ Naturalis Principia Mathematica, first published in 1687. Shortened to Principia, the Latin document includes details about Newton’s experiments during lockdown and his further studies at Cambridge University. Whilst at Woolsthorpe Manor, Newton also produced three papers on calculus, which he continued working on once life returned to “normal”. Six months after returning to Cambridge, he was elected as a Minor Fellow of Trinity College. Then, two years later, he was appointed as the second Lucasian Professor. 

Principia is one of the most important books in the history of science and brought about the beginning of the Age of Reason. Yet, Newton usually kept to himself at Cambridge, almost in a state of self-isolation and rarely discussed his ideas with others. Without the prompting of one student and future astronomer, Edmond Halley (1656-1742), Principia may never have been printed. Halley coaxed Newton through the writing process by asking questions and demanding written proof. The young astronomer even paid for the publication of Newton’s work.

Although science has moved on since Newton’s era, Principia remains a respected piece of work. When asked to name his 2015 mission to the International Space Station, British Astronaut Tim Peake (b. 1972) chose Principia in honour of the famous scientist and mathematician.

“Not only does it have the link with space and gravity but also it’s a celebration of science and that is what the space station is about now.”
Tim Peake

As well as an English translation of Principia, Peake took seeds from the tree at Woolsthorpe Manor on his trip to the International Space Station. Peake and the seeds spent six months floating in microgravity before returning to Earth in 2016. Then the UK Space Agency, the National Trust and the Royal Botanic Gardens at Kew took care of the seeds, nurturing them into saplings.

In January 2020, one of the “Space Saplings” returned to Woolsthorpe Manor, where Tim Peake planted it a few yards from the original tree. Many people have joked about potential alien DNA picked up by the seeds while in space, but chances are the sapling will grow into a normal Flower of Kent tree.

A competition was held to find homes for the remaining saplings. They have since been planted at the Eden Project in Cornwall, the Jodrell Bank Discovery Centre in Cheshire, the Brogdale Collections in Kent, the Catalyst Science Discovery Centre in Cheshire, Bushy Park in London, the Rosliston Forestry Centre in Derbyshire, and the United Nations Office for Outer Space Affairs in Vienna. To win the competition, the applicants demonstrated their commitment to science, physics, space and horticulture. As well as looking after the young trees, the centres are expected to encourage education, break down barriers to allow access to science for people of all ages, genders and abilities, and inspire potential future Isaac Newtons.

Whilst the apple tree is one of the greatest draws to Woolsthorpe Manor, the museum-like house provides an insight into Newton’s everyday life. By studying Newton’s diaries and letters from his family and friends, the National Trust has recreated Newton’s childhood home to the best of its ability. Newton had very few possessions and not much wealth of which to speak. From the outside, his home life appeared typical of the seventeenth century, yet Newton saw the world in a very different way.

The house reveals Newton’s human needs, making him appear no different from everyone else. Despite his genius status, Newton had his foibles and, according to a list of sins, quite a temper. Newton’s background did not reflect his achievements, which may give hope to many young visitors who feel their circumstances hinder them from reaching their full potential. In the barns and stables, hands-on activities demonstrate some of Newton’s ideas and discoveries. Not everyone can understand the workings of Newton’s mind, but seeing things in action certainly helps break Science down into manageable portions.

Woolsthorpe Manor is open from Thursday to Monday between 11am and 5pm. Access to the Manor House is by guided tour only, which can be booked online. Tickets cost £9.50 for adults and £4.75 for children over the age of five. National Trust members can visit for free.

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The Queen of Science

When researching women of science, Mary Somerville is a name that frequently crops up. Since past societies often wrote women out of history, Mary Somerville must have been a scientist of some significance to feature so often in biographies of other women (and men). Mary Somerville receives a mention in two of my recent blogs about female scientists (Ada Lovelace and Caroline Herschel), so it is about time I focused on Mary’s life and achievements.

Mary Fairfax, Mrs William Somerville – Thomas Phillips

Born on 26th December 1780 in Jedburgh, Scotland, Mary was the second of four surviving children to Vice-Admiral William George Fairfax (1739-1813) and Margaret Charters. Despite her father’s position, his pay was meagre, and Mary grew up in poverty in her childhood home at Burntisland, Fife. To earn some extra money, Mary’s mother grew and sold vegetables and fruit and kept a cow for milk. Mary’s father spent much of her early life at sea, leaving her mother to give her a rudimentary education by teaching her to read the Bible.

When Mary was ten years old, her father returned from his recent voyage and expressed his discontent with Mary’s lack of education. After scraping together as much money as possible, Fairfax sent his daughter to a boarding school in Musselburgh for a year, where she learnt English grammar and French.

Over the following year, Mary developed a fascination with shells and small sea creatures, which she found while spending hours on the beach. When at home, her mother expected Mary to help around the house, but she often retreated to her father’s library to read. As a result, her parents sent her to a local school to learn the more feminine art of needlework. Mary expressed her contempt in her memoirs, admitting she “was annoyed that my turn for reading was so much disapproved of, and thought it unjust that women should have been given a desire for knowledge if it were wrong to acquire it.”

Mary Somerville as a Young Lady – John Jackson

Aware of her desire to learn, the headmaster of the village school paid home visits to Mary to teach her about geography. This came to an end after her 13th birthday when her mother sent Mary to writing school in Edinburgh, where she also studied arithmetic. In her spare time, Mary attempted to teach herself Latin, later seeking the help of her uncle, Rev. Dr Thomas Somerville (1741-1830). Mary also taught herself the Greek language and how to play the piano during school holidays and, instead of returning to the writing school, enrolled at an art school run by Alexander Nasmyth (1758-1840). Nasmyth also had an interest in astronomy and mechanical science, and he gladly became Mary’s tutor on the subjects.

In 1797, Mary’s father helped Admiral Adam Duncan (1731-1804) beat the Dutch at the Battle of Camperdown while serving on HMS Venerable. For this, Fairfax earned a knighthood and became Colonel of Marines. The family’s income significantly increased, and they joined Edinburgh socialites at many social events, where Mary earned the nickname “the Rose of Jedburgh”. When at home, Mary’s parents expected her to play the traditional role of a daughter, but when not in public, Mary focused on playing the piano, painting and studying algebra. Sadly, the family’s good fortune was marred by the death of Mary’s older brother Samuel, who died while serving in the East India Company’s military service, aged 21.

Self Portrait – Mary Somerville

In 1804, Mary met a distant cousin, Captain Samuil Samuilovich Greig (1778-1807), a Russian Consul. The same year, Mary married Grieg, some claim by force and moved to London. In 1805, they welcomed a son, Woronzow (1805-65), named after a Russian diplomat. Their second son, George, soon followed, who Mary nursed while simultaneously trying to study science and mathematics. Grieg disliked his wife’s intellectual pursuits and actively tried to prevent her. The unhappy marriage came to an end in 1807 with the death of Grieg. Mary returned to Scotland with her sons, but sadly the infant George died the same year.

The money left by her late husband allowed Mary to pursue the intellectual interests that Greig had forbidden. She resumed her mathematical studies with the encouragement of the Church of Scotland minister and scientist John Playfair (1748-1819), who introduced her to William Wallace (1768-1843). Mary regularly wrote letters to Wallace, discussing her mathematical learnings, and he, in turn, suggested books to read. Gradually, Mary’s studies grew to include astronomy, chemistry, electricity, geography, magnetism and microscopy.

Mary practised her mathematical skills by solving problems posed in the journal of the Military College at Marlow, now known as Sandhurst. Several of her solutions featured in the Mathematical Repository under the pseudonym “A Lady”, but one particular result earned Mary a silver medal in 1811.

William Somerville c. 1840

When not studying, Mary spent time with her family, who introduced her to people of note, including her cousin Dr William Somerville (1771-1860), the inspector of the Army Medical Board. Somerville actively encouraged Mary’s ambitions and helped her learn about physical science. In 1812, Mary married William Somerville, with whom she had four children: Margaret Farquhar (1813-23), Thomas (1814-15; died in infancy), Martha Charters (1815-79) and Mary Charlotte (1817-75).

Mary’s husband was elected to the Royal Society, which boosted their reputation in society, acquainting them with many writers and artists, including J.M.W. Turner (1775-1851) and Sir Walter Scott (1771-1832). In 1819, the Somerville’s moved to Hanover Square, London, so that Mary’s husband could accept the position of physician at Chelsea Hospital. Meanwhile, Mary began tutoring a friend’s daughter, Ada Lovelace (1815-52). At a scientific gathering, Mary met Charles Babbage (1791-1871), who was “making his Calculating-machines”. Mary later introduced Lovelace to Babbage, which sparked a significant professional relationship.

A German governess looked after Mary’s children, allowing her the freedom to mingle in society. She became well known by scientists and mathematicians, both in England and abroad. Together, the Somervilles travelled around Europe, meeting people of note, who often returned the visit. The only thing marring this idyllic lifestyle was the death of their eldest daughter Margaret in 1823.

In 1826, Mary published her first scientific paper, The magnetic properties of the violet rays of the solar spectrum, in the Royal Society’s journal. One reader, Sir David Brewster (1781-1868), declared she was “certainly the most extraordinary woman in Europe – a mathematician of the very first rank with all the gentleness of a woman.” Subsequently, Mary received a commission from Henry Peter Brougham, 1st Baron Brougham (1778-1868), to translate the Traité de mécanique céleste (“Treatise of celestial mechanics”) by Pierre-Simon Laplace (1749-1827) for the Society for the Diffusion of Useful Knowledge (SDUK). Not only did Mary painstakingly translate the lengthy treatise from French to English, she embellished it with her knowledge about the mathematics behind the workings of the solar system, saying, “I translated Laplace’s work from algebra into common language.” This translation, published under the title The Mechanism of the Heavens in 1831, made Mary famous throughout the English speaking world. Cambridge University used the publication as a textbook until the 1880s.

Mary’s translation continued to garner praise over the next few years, particularly from “many men of science”. In 1834, Mary was elected an honorary member of the Royal Irish Academy, the Bristol Philosophical Institution and the Société de Physique et d’Histoire Naturelle de Genève. She also received an annual £200 civil pension from the British Crown, although spent most of her time in Italy. Despite this, the Somervilles faced a financial crisis in 1835 as the needs of their children increased as they neared adulthood. Money made from Mary’s book and future publications often saved them from bankruptcy, although Mary always maintained she only wrote for pleasure. Mary’s second book, On the Connexion of the Physical Sciences, published in 1834, sold over 15,000 copies, making it one of the biggest selling science books of the 19th century. In a review of the book, the polymath Rev Dr William Whewell (1794-1866) coined the word “scientist”. Until then, the term “man of science” was the usual description, but this did not befit a woman.

Mary Somerville – James Rannie Swinton

Due to her love of astronomy, Mary joined in the discussions about a hypothetical planet on the other side of Uranus. She wrote of her predictions in later editions of Connexion, which were fulfilled in 1846 by the official discovery of Neptune. Two years later, Mary published her third book, Physical Geography, the first English textbook on the subject. Mary described the structure of planet earth, including land, mountains, volcanoes, oceans, rivers and lakes. She also discussed weather, temperature, plants, animals and prospects of the human race. Setting the book apart from modern publications is Mary’s Victorian view that humans are superior to all other life forms. Physical Geography sold more copies than her previous books and earned her the Victoria Gold Medal of the Royal Geographical Society. A decade later, she was elected to the American Geographical and Statistical Society.

Haliomma Echinaster, a marine phosphorescence.

Although Mary Somerville continued to study and join in mathematical and scientific discussions, it was not until 1869 that she published her fourth book. Molecular and Microscopic Science took ten years to complete and on several occasions Mary admitted she regretted the subject choice. “In writing this book I made a great mistake, and repent it. Mathematics are the natural bent of my mind. If I had devoted myself exclusively to that study, I might probably have written something useful, as a new era had begun in that science.” Nonetheless, the book proved successful and contained up-to-date information about atoms and molecules, plant life, and animals. It also contained 180 illustrations, which significantly increased the cost of the publication.

Shortly before the publication of her final book, the British MP John Stuart Mill (1806-73) asked Mary to be the first to sign a petition for female suffrage. Unfortunately, the petition was unsuccessful. In her autobiography, published posthumously from many letters to and from Mary, she declared, “British laws are adverse to women.” Throughout her life, Mary felt the effects of the male-dominated world, particularly in childhood when she could not study the same subjects as her brothers. Fortunately, she also saw positive changes, such as higher education establishments opening to women.

On 29th November 1872, Mary Somerville passed away aged 91 in Naples. Her husband predeceased her by 12 years, and Mary’s daughters helped to look after her for the remainder of her life. Mary was buried in the English Cemetery in Naples, and the following year, her letters and memoirs were published under the title Personal recollections, from early life to old age, of Mary Somerville. The book includes letters to and from family, friends and notable public people, including Ada Lovelace.

Mary Somerville lived on through her work and books, some of which universities continued to use until the 20th century. She has also been honoured several times over the past century and a half, including the naming of Somerville College at the University of Oxford in 1879, one of the first women’s colleges. Also named after the first person to be called a scientist is Somerville Square in her home town Burntisland, Somerville House boarding school in Australia, and Somerville Island in Canada.

Whilst it is true that many honours come after a person’s death, Mary Somerville received some during her lifetime. In 1835, when Mary was 55 years old, a ship named Mary Somerville set sail. Belonging to Taylor, Potter & Co., of Liverpool, the ship sailed to and from India and the West Indies carrying trading goods. The ship worked for 17 years until it disappeared after departing from Saint Helena in the South Atlantic Ocean on 18th October 1852. When she did not appear at her destination, she was presumed to have foundered, and all crew were believed dead. The ship may have nearly reached the British Isles because, on 11th January 1853, a chest belonging to the Mary Somerville washed up on Saint Michael’s Mount in Cornwall.

Mary’s legacy continued into the 20th century when an asteroid discovered on 21st September 1987 was named 5771 Somerville in her memory. This asteroid, the size of a minor planet, orbits the sun once every five years and seven months (2,029 days). The small Somerville crater on the eastern side of the moon also honours Mary Somerville.

Perhaps Mary Somerville’s greatest honour to date is becoming the face of the Royal Bank of Scotland’s £10 note. In February 2016, RBS held a public vote on Facebook to decide which Scottish figure should replace the nobleman Lord Ilay (1682-1761), who had appeared on the note since 1987. Wishing to change the material of the note from paper to polymer, RSB thought the public should have a say about the design. Voters had a choice between several notable people, including Mary Somerville, James Clerk Maxwell (1831-79) and Thomas Telford (1757-1834). The new note, featuring a young Mary Somerville on one side and a picture of two otters on the reverse became legal tender in Scotland on 4th October 2017.

Google Doodle 2nd February 2020

On 2nd February 2020, Mary Somerville received her most recent honour with a Google Doodle. For 24 hours, a cartoon version of Mary sitting at a desk was the first thing people saw when visiting the Google website. Doodle designer Alyssa Winans commented that she admired Mary’s “voracious appetite for learning”. Winans hoped “this Doodle will shine a light on Mary Somerville’s contributions, and people will feel inspired to explore a broad range of interests.”

Like Winans, I hope this blog has shone a light on Mary Somerville’s contribution to science and mathematics. She wrote several successful books at a time when being a female writer was challenging. Mary Somerville was also a vocal advocate for equal rights, and it is thanks to her, or at least a reviewer of her books, that the gender-neutral term “scientist” came into the English language.

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The Enchantress of Number

Contemporary computers have a history that dates back five millennia to the abacus. Great minds, such as the Greek mathematician Archimedes (c.287-212 BC), developed theories that led to modern calculus and, eventually, to the invention of the computer. The devices we are familiar with today emerged during the 20th century, but the first “computer programmer” lived a century earlier. Not only does that surprise many, but the gender of this programmer also raises eyebrows. Augusta Ada King, the Countess of Lovelace, or “The Enchantress of Number”, as the polymath Charles Babbage (1791-1871) called her, went against social norms to study mathematics and receive the accolade of the first computer programmer.

Ada King, Countess of Lovelace, circa 1840,

Generally, but incorrectly, known as Ada Lovelace, the first computer programmer is gradually earning recognition in the 21st century. In 2009, the non-profit organisation The Ada Initiative marked the second Tuesday of October as the annual Ada Lovelace Day. The goal of this event is to “raise the profile of women in science, technology, engineering, and maths,” particularly those written out of history. Whilst their achievements are significant, it is also important to learn about their lives and the obstacles they overcame as women to fulfil their ambitions.

The Honorable Augusta Ada Byron was born on 10th December 1815 in London to Lord and Lady Byron. Lord George Gordon Byron (1788-1824), the renowned poet and politician, expected a “glorious boy” and did not hide his disappointment when Lady Byron gave birth to a girl. He named his daughter after his sister Augusta Leigh (1783-1851), but insisted on calling her by her middle name Ada. Just over a month after the birth, Lord Byron commanded his wife to leave and set about organising a legal separation.

Ada Byron, aged four

Happy to escape from her immoral husband, Lady Anne Isabella Noel Byron (1792-1860), moved to her parents home in Leicestershire with her 5-week old daughter. She refused to let Byron see his child, not that he protested, and Ada never knew her father. Although Ada lived with her mother, she did not have a loving relationship and spent the majority of her childhood in the care of her grandmother, Lady Judith Milbanke. When in public, Lady Byron acted like the perfect mother, but in private, she did not even mention Ada’s name. In a letter to her mother, Lady Byron wrote, “I talk to it for your satisfaction, not my own, and shall be very glad when you have it under your own.”

Ada was a sickly child, often confined to her bed due to migraine-like headaches. At 14, she contracted measles, which paralysed her legs. In the year that followed, Ada spent her time in bed but kept herself amused by reading about and practising mathematics. Although usually reserved for male students, Ada’s mother insisted she receive lessons in maths and science. Lady Byron feared her daughter becoming an “insane” poet like her ex-husband.

During one of her long bouts of illness, Ada dreamed of flying. Using both her imagination and logic, Ada studied the anatomy of birds, analysing the right proportions between wings and body. She even went as far as to consider suitable materials and wrote about her experiments in a book called Flyology. Ada also envisioned a winged flying machine containing a steam engine for power. Little did she know that 76 years later, the Wright Brothers would take their first flight in a similar construction.

Ada Byron, aged seventeen

At 16, Ada regained the use of her legs, although she relied on crutches for some time. Evidence suggests she was fully mobile by the age of 18 when she attempted to elope with a male tutor. Since Lady Byron covered up the scandal, the name of the tutor is unknown. Ada had many tutors for mathematics and science, including the English clergyman William Frend (1757-1841) and British physician William King (1786-1865). Augustus De Morgan (1806-71), a mathematician and logician, encouraged Ada’s passion for numbers and noted she had the potential to become “an original mathematical investigator, perhaps of first-rate eminence.”

Ada’s favourite tutor was Mary Somerville (1780-1872), the Scottish researcher and scientific author, who introduced her to many notable people, including Charles Babbage, Michael Faraday (1791-1867) and Charles Dickens (1812-70). She also met lots of people at Court after she was presented at the age of 17, where she met her future husband Lord William King-Noel, 8th Baron King (1805-93).

Intrigued by Ada’s mathematical prowess, Babbage invited her to view the prototype of his Difference Engine: a type of calculating machine that is described today as the first computer. Fascinated by his work, Ada persuaded Somerville to take her to visit Babbage as often as possible. Ada liked to watch Babbage work while taking notes but soon started to voice suggestions.

Portrait of Ada by British painter Margaret Sarah Carpenter (1836)

Meanwhile, Ada’s social life continued at Court, where she attended many functions and events. Enamoured by her brilliant mind, men considered her “a popular belle of the season”. She caught the eye of the 8th Baron King, whom she married on 8th July 1835, thus becoming Lady King. They honeymooned in Somerset and ten months later welcomed a son, Byron (1836-62). The following year, Ada gave birth to a daughter, Anne Isabella (1837-1917), but became unwell with “a tedious and suffering illness, which took months to cure.” Her third child, Ralph Gordon (1839-1906), was born on 2nd July 1839.

In 1838, Ada learned she was a descendant of the Barons Lovelace, of Hurley in the County of Berks, the last of whom passed away in 1736. The Peerage of England decided to revive the title, making Ada’s husband the Earl of Lovelace and Ada the Countess of Lovelace. It is due to this title that Ada is often mistakenly referred to as Ada Lovelace.

After the birth of her youngest child, Ada returned to working with Babbage. In 1842, the English scientist Charles Wheatstone (1802-75) commissioned the countess to translate an academic paper from French into English. This was a transcript of Babbage’s talk at the University of Turin written by Luigi Menabrea (1809-96), the future Prime Minister of Italy. The papers introduced Babbage’s proposal for another machine, the Analytical Engine, which he described as a simpler version of the Difference Engine.

Lovelace’s diagram from “note G”, the first published computer algorithm

As well as transcribing Menabrea’s transcript, Ada added notes to the article. She explained what made the hypothetical Analytical Engine different from the Difference Engine and demonstrated how the machine could calculate a series of Bernoulli numbers. These numbers are the result of a complicated formula that only the elitist mathematical brains could fathom. After writing both an explanation and a demonstration of the Analytical Engine’s potential output, Ada’s notes were three times longer than the original article. Although the Analytical Engine has never been built, Ada’s work is regarded as the world’s first published computer programme.

Ada also argued that “The Analytical Engine has no pretensions whatever to originate anything. It can do whatever we know how to order it to perform. It can follow analysis, but it has no power of anticipating any analytical relations or truths.” In other words, a machine or computer can only work with the input provided by its maker and cannot surpass the knowledge or intelligence of the collective human race. This idea computer scientists continue to debate today during their strive to develop Artificial Intelligence.

As well as numbers, Ada believed the Analytical Engine had the potential to “act upon other things besides number”, for instance, music. Babbage’s machines only used numbers, but Ada believed these digits could represent other entities, such as music tones and letters. The Analytical Engine was never constructed, although British software engineer John Graham-Cumming is determined to build it, so Ada’s theory has not been tested. Yet, 100 years after Ada expressed the idea, computer scientists developed the modern computer using a similar approach.

Despite being a woman, many mathematicians respected Ada, particularly Michael Faraday, who described himself as a supporter of Ada’s work. Unfortunately, science journals published Sketch of the Analytical Engine containing Ada’s translations and appendices under her initials rather than her full name. For decades after her death, the initials hid Ada’s true identity, and many assumed the mathematician was a man.

Painting of Lovelace seated at a piano, by Henry Phillips (1852)

In 1852, Ada was diagnosed with uterine cancer, with which she suffered in agony for several months. During this time, her mother forbade visits from friends, including Babbage, and encouraged her daughter to turn to religion. On 30th August, Ada confessed something to her husband, which upset him enough to abandon her bedside for the remainder of her life. To date, no one knows what Ada said to cause such a reaction. She eventually passed away on 27th November 1852 at the age of 36. As per her final strange request, she was laid to rest next to her father, a man she never met, at the Church of St. Mary Magdalene in Hucknall, Nottinghamshire.

After her death, people remembered Ada more for a series of scandals rather than her mathematical genius. During the 1840s, several rumours of extra-marital affairs surrounded Ada, but more scandalous was her love of gambling. After forming a syndicate with her (male) friends, Ada lost more than £3,000 by betting on horse races. In 1851, she attempted to create a mathematical formula to guarantee successful bets but failed and lost thousands of pounds.

Rumours of Ada’s romantic affairs resurfaced after the reading of her will. Rather than leaving the Byron family heirlooms to her children, she left them to John Crosse, the son of British scientist Andrew Crosse (1784-1855). Most correspondences between Ada and John were destroyed after her death, so the truth of their relationship will never come to light.

Ada’s eldest son Byron became the 12th Baron Wentworth after his grandmother’s death in 1860. Unfortunately, he did not have long to enjoy it before his sudden death two years later, aged 26. The barony passed to Ada’s youngest child, Ralph, who also became the 2nd Earl of Lovelace after his father’s death in 1893. Ralph avoided public life as much as possible and spent his 22nd year in Iceland learning about Icelandic and Norse literature. He also enjoyed mountain climbing and became an accomplished linguist. Rather than becoming a mathematician like his mother, Ralph preferred to write and, shortly before his death, published Astarte: A Fragment of Truth concerning George Gordon Byron, first Lord Byron, which divulged his grandfather’s incestuous nature.

Lady Anne Blunt, in Bedouin dress, and her favourite riding mare, Kasida 1900

Lady Anne Blunt, Ada’s middle child, married the poet Wilfrid Blunt (1840-1922), with whom she co-founded the horse breeding firm Crabbet Arabian Stud. She travelled extensively around the Middle East purchasing Arabian horses, many of which she brought home to England despite her husband’s protests that the horses preferred warmer climates. After Anne’s death, her only child, Judith Blunt-Lytton (1873-1957), continued the horse breeding business. A descendant, John Lytton (b.1950), is currently a crossbencher in the House of Lords.

Ada King, Countess of Lovelace, did not regain her reputation as an extraordinary mathematician and computer programmer until the 1970s with the production of Childe Byron by playwright Romulus Linney (1930-2011). Unfortunately, this play focused more on the non-existent relationship between Ada and Lord Byron than on her career. Ada’s mathematical genius came to the fore in William Gibson (b.1948) and Bruce Sterling’s (b.1954) 1990 steampunk novel The Difference Engine, and in the 1997 film Conceiving Ada. Other plays and books include Ada and the EngineThe Thrilling Adventures of Lovelace and Babbage, and The Wollstonecraft Detective Agency. The Countess of Lovelace also appeared as a character in an episode of Doctor Who in 2020.

An illustration inspired by the A. E. Chalon portrait created for the Ada Initiative

Dying at such a young age, Ada did not have the opportunity to receive praise for her work, nor did she know how much it would change the future. As a woman, it is unlikely she would have gained adequate recognition at the time, as is the case for many of her sex. She finally received the long due commemoration over a century after her death. In 1980, the United States Department of Defense named their computer language “Ada” in her memory, and the following year, the Association for Women in Computing inaugurated its Ada Lovelace Award. Also named after the mathematician is the Lovelace Medal for the British Computer Society, Ada College in Tottenham Hale, the Ada Initiative, and the Ada Developers Company.

Blue plaque to Ada Lovelace in St. James’s Square, London

In November 2020, Trinity College Dublin announced the plan to add four busts of famous women to their library, which until now has contained only statues of men. Ada Countess of Lovelace will make history once again alongside Rosalind Franklin (1920-58), Augusta Gregory (1852-1932), and Mary Wollstonecraft (1759-97).

It is a great shame that Ada Countess of Lovelace died before she could develop more groundbreaking theories in computer science. It is an even greater shame that, for a hundred years, her gender was hidden behind her initials, leading thousands to believe technology a man’s science. Although she did not build a machine or get the chance to test her hypothetical programme, Ada’s genius ideas greatly assisted the development of modern computers.

“They say behind every great man there’s a woman,” and this is indeed true in the professional relationship between Babbage and Lovelace. Ada’s “poetical science” mindset asked questions about Babbage’s machines, and she developed visions that none of the top scientists in the industry could imagine. Whereas they saw what was in front of them, Ada realised the potential of such machines and, as we can confirm today, she was right.

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