Background
Her husband was John II, Duke of Brabant, whom she married in 1290. The year of her mother"s death. Margaret was born on 15 March 1275, at Windsor Castle, the tenth child of King Edward I and his cousin Eleanor of Castile.
Margaret"s fifteen siblings included Joan of Acre, Eleanor, Countess of Bar, Elizabeth of Rhuddlan and her father’s successor, Edward II of England.