+--Wilfried Rensen 
Tobias Rensen 
|                 +--Franz Böhmann  (ABT 1766-)
|              +--Johann Henrich Bohmann  (1788-)
|              |  +--Maria Catharina Brockmann 
|           +--Heinrich Böhmann  (16 Nov 1819-)
|           |  +--Helene Brinkmann  (1790-)
|        +--Hermann Böhmann 
|        |  |  +--Jakob Nagel  (BEF 1823-)
|        |  +--Maria Anna Nagel  (28 Nov 1843-)
|        |     +--Angela Helena Kösters  (BEF 1825-)
|     +--Gerhard Böhmann  (17 May 1909-12 Nov 2000)
|     |  |     +--Johann Gerd Siemer 
|     |  |  +--Johann Gerhard Siemer  (30 Nov 1853-)
|     |  +--Elisabeth Siemer  (10 Oct 1881-10 Apr 1966)
|     |     +--Elisabeth Oltmanns  (14 Mar 1857-)
|  +--Heinrich Böhmann 
|  |  +--Margaretha Rauert 
+--Andrea Böhmann 
   +--Ingrid Schepers