Isabella I of Jerusalem tried to play Isabella and her husband off against him, but Humphrey did homage to the royal couple. Isabella was the daughter of Amalric, King of Jerusalem, by his second wife, Maria Comnena. Maria Comnena (who was a grandniece of the Byzantine Emperor, Manuel I Komnenos) married Amalric on 29 August 1171. Isabella was born before September 1172. Amalric died unexpectedly on 11 July 1174. His son by his first marriage, Baldwin IV, was crowned king two weeks later. Before long, it became obvious that Baldwin suffered from lepromatous leprosy. To secure the succession of the ailing king, his sister,
Baldwin de Redvers, 1st Earl of Devon Baldwin de Redvers, 1st Earl of Devon Baldwin de Redvers, 1st Earl of Devon (died 4 June 1155), feudal baron of Plympton in Devon, was the son of Richard de Redvers and his wife Adeline Peverel. He was one of the first to rebel against King Stephen, and was the only first rank magnate never to accept the new king. He seized Exeter, and was a pirate out of Carisbrooke, but he was driven out of England to Anjou, where he joined the Empress Matilda. She made him Earl of Devon after she established herself in England, probably in early