Herbert IV de Vermandois - Pedigree | FamilyCentral
 Abt 1032 - Abt 1080
 Abt 1000 - 25 May 1045
 Abt 955 - 25 May 1045
 Abt 970 -
 Abt 880/90 - 23 Feb 943
Family Group
 Abt 890 - 2 Oct 939
 913/14 - 5 May 984