
 1814 - 1848  (33 years)
 1814 - 1848  (33 years)( = Descendancy chart to this point,
 = Descendancy chart to this point,  = Expand,
 = Expand,  = Collapse)
 = Collapse)
 Josephus Ambrosius Mertens  b. 12 May 1798 d. 1 Jul 1866
  Josephus Ambrosius Mertens  b. 12 May 1798 d. 1 Jul 1866 b. 15 Aug 1833 d. 16 Apr 1834
 b. 15 Aug 1833 d. 16 Apr 1834
                 b. 28 May 1835 d. 5 Oct 1836
 b. 28 May 1835 d. 5 Oct 1836
                 b. 14 Aug 1836 d. 5 Oct 1836
 b. 14 Aug 1836 d. 5 Oct 1836
                 b. 6 Oct 1837 d. 7 May 1841
 b. 6 Oct 1837 d. 7 May 1841
                 b. 16 Jun 1839 d. 12 Feb 1878
 b. 16 Jun 1839 d. 12 Feb 1878
                 b. 8 Mar 1841 d. 24 Apr 1848
 b. 8 Mar 1841 d. 24 Apr 1848
                 b. 30 Jul 1842 d. 28 Oct 1843
 b. 30 Jul 1842 d. 28 Oct 1843
                 b. 20 Nov 1843 d. 1 Jul 1864
 b. 20 Nov 1843 d. 1 Jul 1864
                 b. 20 Aug 1845 d. 2 Jul 1857
 b. 20 Aug 1845 d. 2 Jul 1857
                 b. 15 May 1847 d. 13 Jan 1848
 b. 15 May 1847 d. 13 Jan 1848