+---- Cornelis van Leeuwen
+---- Cornelis van Leeuwen ca 1846-1921
| +---- Jaapje Roodenburg
==== Pieter Cornelis van Leeuwen
| +---- ? ?
| +---- Pieter Philippa 1798-1845
| | | +---- Barend Kitzelaar †1781
| | +---- Elisabeth Kitselaar 1780-1833
| | +---- Maria Dinklaar ca 1755-
+---- Elisabeth Philippa 1842-1933
| +---- Matthijs Mulder ca 1772-1842
+---- Helena Mulder 1801-1863
| +---- Johannes Welter
+---- Esther Welder ca 1783-1838
+---- Helena Mansvelder
|