Clara Allegra Byron (12 January 1817 – 20 April 1822), initially named Alba, meaning "dawn," or "white," by her mother, was the illegitimate daughter of the poet George Gordon, Lord Byron and Claire Clairmont, the stepsister of Mary Shelley.
She was the illegitimate daughter of the painter Augustus John by his mistress Eve Fleming, mother of the writers Peter Fleming and Ian Fleming by her late husband, although most of her life she was raised as the adopted daughter of Eve Fleming as a pretence to hide her illegitimacy and only discovered her true parentage when she was in her twenties.
But he was not a charismatic figure, and with his cause compromised by his illegitimacy, he faced an opponent with perhaps the better claim, in the eyes of the Portuguese nobles of the Cortes, Catherine, Duchess of Braganza.
In 1974, the 19th of April Movement (M-19), a Colombian guerrilla group, came into the public scene and claimed that its struggle was a reaction to what it called the illegitimacy of the 1970 elections, the nation's bipartisan political system, and the National Front agreement that had supported them.