The primary source which confirms her parentage and marriage has not yet been identified, although...her husband is named as Graf von Mainz. 1
Marriage Information:
Agnes married Gf. Arnold I VAN LOOZ, son of Gf. Emmo VAN LOOZ and Suanehildis GERULFING of Holland. (Arnold I VAN LOOZ was born between 1050 and 1060 in Looz, Limburg, Belgium and died after 1 Apr 1125.)