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 I Rátót Baldwin I Rátót Baldwin (I) from the kindred Rátót (; died after 1255) was a Hungarian distinguished nobleman from the "gens" Rátót, who served as master of the cupbearers three times. His father was Rathold Rátót, ispán ("comes") of Somogy County in 1203. His older brother was Dominic I Rátót. He served as master of the cupbearers between 1233 and 1234. After that he functioned as ispán of Moson County in 1235. He was appointed master of the cupbearers for the second time in 1235, a position which he held until 1238. He was ispán of Vas County from 1240