Claim: Ursinus the Abbot, who was the presumed biographer of Saint Leodegar, became the abbot of the monastery of Saint-Martin and built a basilica during his tenure.
Evidence: Ursinus the Abbot (seventh century) was an abbot of Saint-Martin at Ligugé, and presumed biographer of Saint Leodegar. Ursinus later became the abbot of the monastery of Saint-Martin, where he spent the rest of his days. 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.