Her marriage is confirmed by the testament of "Gerardus [comes]" which names "…genitoribus atque parentibus…Luthardi et Grimildis atque…Hugonis et Bavæ…filiis et filiabus ipsorum". 1
Marriage Information:
Grimhild married Liuthard, comte de Fézensac. (Liuthard de Fézensac was born in Fézensac, Gascogne, France and died on 3 Jan 813.)
Sources
1 Foundation for Medieval Genealogy, Medlands: Liuthard.