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Mathematician and computer pioneer. Born 13 Piccadilly Terrace, daughter of Lord Byron. Brought up by her mother and directed towards science rather than the arts, in fear that otherwise she might turn out like her father. Worked with Charles Babbage and wrote programs for his Analytical Engine. Married and had two sons and a daughter who married Wilfrid Scawen Blunt. Died at 6 Great Cumberland Place.

"Ada" (created in about 1978 and named in her honour) is an internationally standardised, general-purpose programming language used in a wide variety of applications -- from missile control to payroll processing to air traffic control.

Ada Lovelace Day is celebrated annually to raise the profile of women in science, technology, engineering and maths by encouraging people around the world to talk about the women whose work they admire.