This study attempts to identify the Damascene historian Ibn al-Nahwi, who lived at the time of the Fatimid state and chronicled it, in terms of his life, his family, and acquaintances, his tastes and trends, and his lost book of history. It identifies the surviving excerpts of his history in later sources and his method, and importance of his history for the history of Damascus and studies of the Fatimids in general.