 Among its abbots were St. Geoffroy (end of the eleventh century) and the historian Guibert de Nogent, who died in 1112 and whose autobiography, "De Vita Sua" is one of the most interesting documents of the century.Under the title "Gesta Dei per Francos" he wrote an account of the First Crusade.The Abbey of Cuissy in the Diocese of Laon was founded in 1116 by Blessed Lucas de Roucy, dean of Laon, and followed the rule of Premonstratensians.