The first book begins with the conquest of Syria by Umar in the seventh century, but otherwise the work deals with the advent of the First Crusade and the subsequent political history of the Kingdom of Jerusalem.
第一本书开始于七世纪欧麦尔（Umar）征服叙利亚，但是另一方面这部作品还论述了第一次十字军的到来以及随后耶路撒冷王国的政治历史。