The Gesta principum Polonorum is a medieval gesta, or deeds narrative, concerned with Duke Boleslaw III Wrymouth, his ancestors, and the Polish principality during and before his reign. Probably completed between 1112 and 1118, the extant text is present in three manuscripts with two distinct traditions. Its author, though anonymous, is traditionally called Gallus, probably a non-Pole connected with the monastery of Saint-Gilles or somewhere else in western Europe.