+--Baldwinus Belsens 
   +--Guillelmus Belsens  (27 AUG 1692-25 NOV 1745)
   |  +--Joanna de Vos 
+--Jacobus Belsens  (24 FEB 1717/18-9 MAR 1802)
|  |     +--Henricus Coryn  (ABT. 1608-30 JUN 1670)
|  |  +--Franciscus Coryn  (19 JAN 1646/47-)
|  |  |  +--Catharina Herpels  (ABT. 1608-4 NOV 1664)
|  +--Catharina Coryn  (16 AUG 1691-21 NOV 1745)
|     |  +--Joannes Quickelberge  (-3 OCT 1794)
|     +--Cornelia Quequeburne  (24 MAR 1650/51-)
|        +--Joanna de Vyl 
Petrus Franciscus Belsens  (14 MAY 1748-29 MAR 1779)
+--Maria Anna Verniest