Genealogie familie Willemsen
Genealogie van o.a. de Familie Willemsen, Dicks, van Londen, Holkamp, versijp
Gezin: Rudolf Derksen / Gertrudis Philipsen (F1718133196)
 | Albertus Roelofs Dercksen (1688- ) 
|
 | Henrica Krechting (1699- ) |
| Wilhelmus Dercksen (1723- )  |
| Lukas Dercksen (1723- ) |
| Elisabeth Dercksen (1729- ) |
| Elisabeth Dercksen (1730-1812) |
| Albertus Dercksen (1733- ) |
| Rudolf Derksen (1721- )
|
| Gertrudis Philipsen (1722- ) |
| Margareta Dercksen (1751- ) |
| Albertus Derksen (1757-1819) |
| Stephanus Derksen (1760-1828) |