+--Johann Janssen 
Johannes Janssen 
|              +--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-)
|  +--Heinrich Böhmann  (16 Mar 1908-ca. 1 Feb 1943)
|  |  |  +--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 
+--Maria Böhmann 
   |  +--Johann Brinkmann  (11 Jun 1882-)
   +--Elisabeth Brinkmann  (7 Aug 1909-2 Sep 1994)
      +--Minna Erbo  (8 Feb 1882-)