Isabella of England Isabella of England Isabella of England (1214 – 1 December 1241) was Holy Roman Empress, Queen of the Germans, and queen consort of Sicily. She was the fourth child and second daughter of John, King of England and Isabella of Angoulême. At a friendly meeting at Rieti, Pope Gregory IX suggested to Emperor Frederick II that he marry princess Isabella, a sister of King Henry III of England. At first Frederick II was concerned to lose his French allies; but when he realized that an English marriage might end the ongoing Anglo-French feud and constitute an important step towards the
Isabella of Castile, Duchess of York elder sister, Constance (d. 1394), who after the death of their father in 1369 claimed the throne of Castile. Isabella accompanied her sister to England, and on 11 July 1372, at about the age of 17, married John of Gaunt's younger brother, Edmund of Langley, 1st Duke of York, fifth son of King Edward III and Philippa of Hainault, at Wallingford, Oxfordshire, as part of a dynastic alliance in furtherance of the Plantagenet claim to the crown of Castile. According to Pugh, Isabella and Edmund of Langley were 'an ill-matched pair'. As a result of her indiscretions, including an affair