The De Rebus Treverensibus sæculi VIII-X Libellus names two brothers "Gerardus et Meffridus" specifying that Gerhard married Oda, widow of King Zwentibold. Regino records that in 897 "Stephanus, Odacar, Gerardus et Matfridus comites" had their honours confiscated, and the reconciliation of "Stephanus, Gerhardus et Matfridus" with King Zwentibold soon after. Regino records that "Chuonradus comes" sent "filium suum Chuonradum" against "Gerardum et fratrem eius Matfridum" in 906.
The Annales Laubecenses record that "Gebehardum ducem et Liutfredum" were killed in battle against the Bavarians in 910. 1
Also called Gerhard I VON METZGAU