Raymond of Aguilers was a participant in and chronicler of the First Crusade (1096–1099). During the campaign he became the chaplain of Count Raymond IV of Toulouse, the leader of the Provençal army of crusaders. His chronicle, entitled "Historia Francorum qui ceperunt Iherusalem", which he co-wrote with Pons of Balazun, ends with the events immediately following the capture of Jerusalem in 1099.