Settipani names her as the wife of Comte Albert, and gives her parentage, but does not cite the primary source on which this is based. A list of members of the Cathedral of Paris lists (in order) "Albertus comes, Girberga comitissa, Harbertus, Otto, Lewultus, Girbertus, Gondrada, Ricardus, Harbertus comes…", the first four individuals named apparently being Comte Albert, his wife and three sons, and the last named maybe his brother or nephew. 1
Marriage Information:
Gerberga married Cte Adelbert I "le Pieux " DE VERMANDOIS, son of Héribert II CAROLING, Comte de Troyes et de Vermandois, and Adèla CAPET, between 949 and 954. (Adelbert I "le Pieux " DE VERMANDOIS died on 9 Sep 987.)
Sources
1 Foundations for Medieval Genealogy, Medlands, Gerberga.
Also referred to as Gerberga VON LOTHRINGEN.