Catherine of Lancaster Queen consort of Castille (1373–1418) Parents Constance of Castile, Duchess of Lancaster John of Gaunt Children Maria of Castile, Queen of Aragon John II of Castile Infanta Catherine, Duchess of Villena Siblings John Beaufort, 1st Earl of Somerset Joan Beaufort, Countess of Westmorland Thomas Beaufort, Duke of Exeter Henry IV of England Henry Beaufort Philippa of Lancaster Elizabeth of Lancaster, Duchess of Exeter John Plantagenet Edward Planatagenet John of Lancaster Blanche Plantagenet John Plantagenet Partners Enrique III of Castile
