Willem van Erp
| Family | Pedigree | Reports |
| Willem van Erp |
| b. 13 Feb 1902 |
| d. 31 May 1979 |
| Theodorus Maria van Erp |
| b. 22 Jul 1869 |
| d. 12 Jan 1942 |
| Maria Geestman |
| b. 7 Jun 1870 |
| d. 23 Oct 1925 |
| Willem van Erp |
| b. 2 Mar 1829 |
| d. 27 Mar 1900 |
| Agatha Tjepkema |
| b. |
| d. 8 Apr 1908 |
| Dedericus van Erp |
| b. |
| d. 22 Jan 1875 |
| Maria Johanna Huurmans |
| b. |
| d. 24 Jul 1852 |
