What was Ada Lovelace's birth name?

Ada Lovelace's birth name was Augusta Ada Byron. She was born in London on 10 December 1815 as the only legitimate child of the poet George Gordon Byron, known as Lord Byron, and Anne Isabella Milbanke, later Lady Byron.

The name “Ada” was given to her by her father, while “Augusta” honored Lady Byron's close friend and Byron's half-sister, Augusta Leigh. Ada was generally known simply as Ada Byron during her childhood and early adulthood.

Her name changed through different stages of her life. After marrying William King in 1835, she became Ada King; when her husband was made Earl of Lovelace in 1838, she became Augusta Ada King, Countess of Lovelace. “Ada Lovelace” is the familiar modern form, but it was not her birth name.

She is remembered for her notes on Charles Babbage's Analytical Engine, including an algorithm often described as the first published computer program.