A leading member of the nobility of Jerusalem and regent of the kingdom for the captive King Baldwin II in 1123.
A knight from the diocese of Thérouanne, Eustace rose to prominence as the leading vassal of Baldwin I of Jerusalem (1100-1118), who by 1110 had enfeoffed him with the coastal lordships of Sidon (mod. Saïda, Lebanon) and Caesarea (mod. Har Qesari, Israel). During the reign of Baldwin II (11181131), Eustace was elected as constable and regent of the kingdom when the king was captured by the Turks of northern Syria, but died after less than three months in this office (15 June 1123). Eustace’s major lordships passed to his sons Eustace II, who received Sidon, and Walter, who received Caesarea. His widow later married Hugh, count of Jaffa.
Crusade-period ramparts of Caesarea, the lordship of Eustace I Granarius. (Library of Congress)