

| Maria Catharina Koslar | |
| *: | 21 Aug 1796 |
| Roetgen, Aachen, (DE) | |
| +: | 3 Jun 1863 |
| Roetgen, Aachen, (DE) | |
| Johannes Matthias Heeren | |
| *: | 7 Mai 1795 |
| Roetgen, Aachen, (DE) | |
| oo: | 20 Jul 1814 |
| Roetgen, Aachen, (DE) | |
| +: | 5 Nov 1873 |
| Roetgen, Aachen, (DE) | |
| Johannes Peter Koslar | |
| *: | 24 Jul 1801 |
| Roetgen, Aachen, (DE) | |
|
| Odilia Stollenwerk | |
| *: | 8 Feb 1757 |
| Roetgen, Aachen, (DE) | |
| +: | 6 Feb 1830 |
| Roetgen, Aachen, (DE) | |
| Johannes Nikolaus Koslar | |
| *: | 7 Mrz 1762 |
| Roetgen, Aachen, (DE) | |
| oo: | 19 Jan 1794 |
| Roetgen, Aachen, (DE) | |
| +: | 11 Aug 1818 |
| Roetgen, Aachen, (DE) | |