| Generation 1 | |
| [1.01 2] . Wirtgen (1787-) | |
| Generation 2 | |
| [1.02 3] Joes Petrus Wirtgen (1754-1820) | DEU |
| [2.01 4] Maria Magdalena Bucholz (~1755-1787) | DEU |
| Generation 3 | |
| [1.03 5] Joannes Paulus Wirtgen (1715-1790) | DEU |
| [2.02* ] Appolinaris Bucholz (<1735->1756) | DEU |
| [3.01 ] Anna Catharina Palm (~1720-1778) | DEU |
| [4.01* ] Agnes . (<1735->1756) | DEU |
| Generation 4 | |
| [1.04* ] Johann Wilhelm Wirtgen (<1686-1757) | DEU |
| [3.02* ] Peter Palm (<1700-) | |
| [5.01* ] Elisabetha Schmid (<1688-1758) | DEU |
