Ada King, Countess of Lovelace, c 1840s.
© NMeM / Daily Herald Archive / Science & Society Picture Library
Ada Lovelace (1815-1852) was an English writer, mathematician and socialite, daughter of Lord Byron and Anne Isabella Milbanke. Lovelace was trained in astronomy and mathematics and taught herself geometry. She was acquainted with many of the leading figures of the day, including Charles Babbage (1791-1871), the computer pioneer and translated and annotated an article 'Sketch of the Analytical Engine' (1843) which is an important source of Babbage's work. The high-level universal computer programming language, ADA, was named in her honour.