Bertha of Holland - Pedigree | FamilyCentral
  - 28 Jun 1061
  - 4 Aug 1113
  - 27 Jun 1039
  - 9 Mar 1044
  - 29 Jun 1059
Family Group
  - 18 Sep 993
Family Group
  - 9 Feb 1011
  - 3 Oct 1011
  - 18 Sep 1017
Family Group
  - 5 Jun 988
  - 10 Apr 990
  - 15 Aug 998
  - 13 Dec 992
  - 27 Mar 973
Family Group
  - 9 May 976
Family Group
  - 15 Jan 980
  - 10 Aug 1015