Eustace Grenier Eustace Grenier Eustace I Garnier, also known as Eustace Grenier or Eustace Granarius (died on 15 June 1123), was lord of Caesarea from before 1110, and lord of Sidon from 1110 to his death. He was a nobleman from the County of Saint-Pol and went to the Holy Land either during the First Crusade or around 1100. He became an influential retainer of King Baldwin I of Jerusalem, who granted Caesarea and Sidon to him. After an Artuqid prince captured Baldwin I's successor, Baldwin II, Eustace was elected constable and bailliff (or regent) in April 1123. Shortly before his death,
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