+--Gerrit Bongers 
      +--Gerrit Bongers  (ABT 1719-)
      |  +--Sibylla Wulting 
   +--Gerrit Bongers  (14 May 1741-14 Nov 1820)
   |  +--Nuland Willemsen 
+--Willem Bongers  (1785-)
|  |  +--Jacob Hendriksen  
|  +--Elisabeth Jacobs  (5 Jan 1744-2 Aug 1820)
|     +--Ariaan Teunissen 
Roelof Bongers  (9 Jan 1819-)
|  +--Roelof Roelofsen 
+--Maria Roelofsen  (1782-)
   +--Christijna Coenders