Allegra Byron Allegra Byron Clara Allegra Byron (12 January 1817 – 20 April 1822) was the illegitimate daughter of the poet George Gordon, Lord Byron and Claire Clairmont. Born in Bath, England, she was initially named Alba, meaning "dawn", or "white", by her mother. At first she lived with her mother, her mother's stepsister, Mary Shelley, and Mary's husband Percy Bysshe Shelley. When she was fifteen months old, she was turned over to Byron, who changed her name to Allegra. Byron placed her with foster families and later in a Roman Catholic convent, where she died at age five of typhus or
Lord Byron Nottingham, Newstead Abbey." Augusta Leigh's child, Elizabeth Medora Leigh, born 1814, was very likely fathered by Byron, who was Augusta's half-brother. Byron had a child, The Hon. Augusta Ada Byron ("Ada", later Countess of Lovelace), in 1815, by his wife Annabella Byron, Lady Byron ("née" Anne Isabella Milbanke, or "Annabella"), later Lady Wentworth. Ada Lovelace, notable in her own right, collaborated with Charles Babbage on the analytical engine, a predecessor to modern computers. She is recognised as the world's first computer programmer. He also had an illegitimate child in 1817, Clara Allegra Byron, with Claire Clairmont, stepsister of Mary Shelley