Pepin was the second son of Emperor Louis the Pious and his first wife, Ermengarde of Hesbaye.His father marched back from a campaign in Brittany all the way to Compiègne, where Pepin surrounded his forces and captured him.The next year, Lothair joined the rebellion and, with the assistance of Ebbo, archbishop of Reims, the rebel sons deposed their father in 833.Lothair's later behaviour alienated Pepin, and the latter was at his father's side when Louis the Pious was reinstated on 1 March 834.Pepin died scarcely four years after getting restored to his former status, he was buried in the Church of St. Radegonde in Poitiers.