+--Hermann Flatken  (29 Sep 1905-5 Jan 1970)
Johann Flatken 
|           +--Franz Böhmann  (ABT 1766-)
|        +--Johann Henrich Bohmann  (1788-)
|        |  +--Maria Catharina Brockmann 
|     +--Heinrich Böhmann  (16 Nov 1819-)
|     |  +--Helene Brinkmann  (1790-)
|  +--Johann Böhmann  (23 Sep 1868-14 Oct 1934)
|  |  |  +--Jakob Nagel  (BEF 1823-)
|  |  +--Maria Anna Nagel  (28 Nov 1843-)
|  |     +--Angela Helena Kösters  (BEF 1825-)
+--Johanna Böhmann  (1 Feb 1906-29 Dec 1998)
   |  +--Hermann Kramer  (8 Oct 1842-1933)
   +--Helena Kramer  (12 Aug 1871-19 Feb 1947)
      |  +--Heinrich Von Höfen 
      +--Maria Von Höfen  (7 Oct 1841-28 Mar 1884)
         +--Maria Jansen Harms