Desiderius of Auxerre was a Merovingian bishop who led the see of Auxerre in France from 614 until his death in 621. Originally hailing from Aquitaine, he likely possessed a noble lineage, potentially being a relative of Queen Brunhild. His life and tenure are recorded in historical texts such as the *Chronicle of Fredegar* and the *Gesta pontificum Autissiodorensium*.