Baldwin I of Jerusalem converted Muslim was one of Baldwin's lovers, but he betrayed Baldwin during the siege of Sidon. He proposed that the defenders of the town kill the King, but a Christian burgher warned Baldwin. Baldwin I of Jerusalem Baldwin I, also known as Baldwin of Boulogne (1060s – 2April 1118), was the first count of Edessa from 1098 to 1100, and the second crusader ruler and first king of Jerusalem from 1100 to his death. Being a younger son, he was destined for a church career, but he abandoned it and married a Norman noblewoman, Godehilde of Tosny. He received the
Philip I, Count of Flanders brother-in-law, intervened in 1184 on behalf of his son-in-law, King Philip, in support of his daughter's interests. The dispute between Count Philip and Baldwin was encouraged by King Philip, who went so far as to name Baldwin his representative in negotiations with the Count. Count Philip's wife, Elisabeth, died in 1183, prompting King Philip II to seize the province of Vermandois on behalf of Elisabeth's sister, Eleonore. Philip then remarried, to Matilda, daughter of Afonso I, the first King of Portugal. Philip gave Matilda a dower that included a number of major Flemish towns, in an apparent slight to Baldwin