Constance of Castile, claimant to the throne of Castile
Constance of Castile (1354 – 24 March 1394) was a claimant to the Crown of Castile. She was the daughter of King Peter, who was deposed and killed by his half-brother, King Henry II. She married the English prince John of Gaunt, who fought to obtain the throne of Castile in her name, but ultimately failed.