Willem Timmerman - Pedigree | FamilyCentral
 30 May 1870 - 1954
 9 Feb 1829 - 23 Jan 1914
 2 Apr 1828 - Mar 1913
 28 Jul 1797 - 4 Aug 1880
 Abt 1802 -
 Abt 1806 -
  - 31 Jul 1859
 21 Jan 1770 - 23 Mar 1857
  - 24 May 1857
 Abt 1741 -
  Children