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 of Jerusalem the Seljuq Sultan of Rum, in the Battle of Dorylaeum on 1July 1097, Baldwin and the Norman Tancred broke away from the main body of the army. They marched as far as Heraclea where they again joined their fellows around 15 August. The long march across Asia Minor in the heat of summer exhausted the crusaders and most knights' horses died. To secure a supply of food and forage, Baldwin and Tancred were sent to the fertile plains of Cilicia. They could count on the local Armenians' support, especially as Baldwin had already been befriended by an Armenian nobleman, Bagrat.