The wife of Graf Meginhard is shown by Wegener as the daughter of Pfalzgraf Arnulf but he quotes no primary source to support this assertion. 1
Marriage Information:
Unnamed daughter of Pfzgf. Arnulf II VON BAYERN married Gf. Meginhard I AN DER MANGFALL. (Gf. Meginhard VON MANGFALL was born in Benediktbeuern, Bayern and died after 987 in Gilching, Bayern.)
Sources
1 Foundation for Medieval Genealogy, Medlands: [daughter].