Ada Lovelace, in full Ada King, countess of Lovelace, original name Augusta Ada Byron, Lady Byron, (born December 10, 1815, Piccadilly Terrace, Middlesex [now in London], England—died November 27, 1852, Marylebone, London), English mathematician, an associate of Charles Babbage, for whose prototype of a digital computer she created a program. She has been called the first computer programmer.

Lovelace was the daughter of famed poet Lord Byron and Annabella Milbanke Byron, who legally separated two months after her birth. Her father then left Britain forever, and his daughter never knew him personally. She was educated privately by tutors and then self-educated but was helped in her advanced studies by mathematician-logician Augustus De Morgan, the first professor of mathematics at the University of London. On July 8, 1835, she married William King, 8th Baron King, and, when he was created an earl in 1838, she became countess of Lovelace.

Ada Lovelace, in full Ada King, countess of Lovelace, original name Augusta Ada Byron, Lady Byron, (born December 10, 1815, Piccadilly Terrace, Middlesex [now in London], England—died November 27, 1852, Marylebone, London), English mathematician, an associate of Charles Babbage, for whose prototype of a digital computer she created a program. She has been called the first computer programmer.

Lovelace was the daughter of famed poet Lord Byron and Annabella Milbanke Byron, who legally separated two months after her birth. Her father then left Britain forever, and his daughter never knew him personally. She was educated privately by tutors and then self-educated but was helped in her advanced studies by mathematician-logician Augustus De Morgan, the first professor of mathematics at the University of London. On July 8, 1835, she married William King, 8th Baron King, and, when he was created an earl in 1838, she became countess of Lovelace.