Baldwin of Ibelin year, the king betrothed his younger half-sister Isabella of Jerusalem, Balian's stepdaughter, to Humphrey IV of Toron, to further reduce the Ibelins' influence. In 1183 he supported Raymond against Guy, who was by now regent for the ailing Baldwin IV. Lord Baldwin was among the barons who advised the king to crown Sibylla's son Baldwin V in 1183, while Baldwin IV was still alive; this was an attempt to prevent Guy from succeeding as king. Baldwin V became sole king while still a child in 1185, and when the young king died in 1186, Sibylla was crowned queen with Guy
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