Siegfried or Sicco Count of Holland - Pedigree | FamilyCentral
 Abt 983 - 6 Jun 1030
 Abt 963 - Aft 14 May 995
 Abt 940 - 10 Apr 990
 Abt 918 - 28 Oct 998
 Abt 900 - 6 Oct 939
 Abt 903 - 14 Nov 4713 BC
 Abt 889 - 27 Mar 964
 Abt 910/15 - 10 Oct 960
 Abt 864 - 10 Sep 918
 Abt 884 - 23 Feb 943
 Abt 897 - Aft 931
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