Gerardus Lieffen
| Family | Pedigree | Reports |
| Gerardus Lieffen |
| b. 17 Sep 1913 |
| d. 1 Oct 1994 |
| Marcellus Loeffen |
| b. 16 Mar 1873 |
| d. 20 Mar 1929 |
| Geertruida van Erp |
| b. 3 Mar 1879 |
| d. 23 Oct 1968 |
| Roelof van Erp |
| b. 26 May 1839 |
| d. 26 Dec 1882 |
| Maria Broeder |
| b. 22 Mar 1852 |
| d. 9 Feb 1905 |
| Willebrordus van Erp |
| b. 23 Feb 1811 |
| d. 27 Jan 1895 |
| Maria van Grunsven |
| b. 20 Mar 1810 |
| d. 7 May 1850 |
