Claim: Ursinus the Abbot became the abbot of the monastery of Saint-Maixent and built a basilica after his tenure.
Evidence: He began his career as a monk in the monastery of Saint-Maixent at Poitiers in Neustria. During his tenure he built a basilica, which became a place of honor to such a degree that in 782 it received the relics of sainted Leodegar.