King of Jerusalem 1946. The Kingdom of Jerusalem had its origins in the First Crusade, when Godfrey of Bouillon, after refusing a crown and the title of King "upon the plea that he would never wear a crown of gold where his Saviour had worn a crown of thorns", took the title "Advocatus Sancti Sepulchri" (Protector of the Holy Sepulcher) in 1099 and was inaugurated as ruler of Jerusalem in the Church of the Nativity in Bethlehem. The following year, his brother Baldwin I was the first to use the title king and the first to be crowned king in the Church of
Baldwin I, Latin Emperor of this land. After Philip II of France took Baldwin's brother, Philippe of Namur, prisoner, Baldwin was forced to agree to a truce to ensure his safety. The Treaty of Péronne was signed in January 1200 on the condition that Baldwin receive the territories he had won during the war. Baldwin was made the vassal of Philip II, and the king returned portions of Artois to Baldwin. In this fight against the French king, Baldwin allied with others who had quarrels with Philip, including kings Richard I and John of England, and the German King Otto IV. A month after