What was XXX's child's name?
Erchinoald
Chaume cites the Notitia de Fundatione Monasterii Glanderiensis to suggest that Erchinoald was descended from the Gallo Roman senator Ansbertus through a son of that senator also named Erchinoald and that Erchinoald's son Leudesius, and was therefore a descendant of the Gallo-Roman families of the Syagrii and Ferrèoli Erchinoald's relationship with Merovingian King Dagobert has been proposed to have been through his mother Gerberga, daughter of Burgundian dux Ricomeres (fl. 575) and Bertrude, her putative sister and mother of King Dagobert.
Leudesius