Robrecht I "de Fries" Count of Flanders - Pedigree | FamilyCentral
 Abt 1033 - 13 Oct 1093
 27 Mar 972 - 20 Jul 1031
 Abt 986 - 25 Jul 1032
 Abt 939 - 24 Oct 996
 Abt 898 - 17 Jun 956
 Abt 922 - 10 May 965
 Abt 927 -