Bishop of Acre (1148/1153-1164) and archbishop of Tyre.
Frederick was a son of Henry I, count of Laroche, a member of the comital family of Namur. He pursued a clerical career in the cathedral chapter of Liège during the episcopate of his cousin, Bishop Albero II, rising to become archdeacon and great provost by 1139. In 1142 Frederick migrated to the kingdom of Jerusalem, where his kinswoman Melisende had become sole ruler on the death of her husband, Fulk of Anjou. Frederick served as a royal chaplain and bishop of Acre (mod. ‘Akko, Israel), and in 1164 he was appointed archbishop of Tyre (mod. Soûr, Lebanon). After King Amalric’s abortive invasion of Egypt (1168-1169), Frederick led an an ultimately fruitless diplomatic mission to seek assistance from Henry II of England and Louis VII of France. He died at Nablus after an illness on 30 October 1174.