| Generation 1 | |
| [1.01 2] Joannes Schug (1825-) | DEU |
| Generation 2 | |
| [1.02 3] Johann _Heinrich Schu (1794-1858) | DEU |
| [2.01 4] Maria Magdalene Pees (1779->1830) | DEU |
| Generation 3 | |
| [1.03* ] Johann Wilhelm Schug (<1766->1815) | DEU |
| [2.02 6] Johannes Paul Bees (1744->1794) | DEU |
| [3.01 5] Anna Wirtgen (1758->1794) | DEU |
| [4.01 7] Anna Catharina Buchholtz (1753->1794) | DEU |
| Generation 4 | |
| [2.03* ] Johann Heinrich Pees (<1723->1749) | DEU |
| [3.02 8] Joannes Paulus Wirtgen (1715-1790) | DEU |
| [4.02* ] Appolinaris Bucholz (<1735->1756) | DEU |
| [5.01 ] Anna Catharina Palm (~1720-1778) | DEU |
| [6.01 9] Anna Wirtgen (~1718-1769) | DEU |
| [7.01* ] Agnes . (<1735->1756) | DEU |
| Generation 5 | |
| [3.03* ] Johann Wilhelm Wirtgen (<1686-1757) | DEU |
| [5.02* ] Peter Palm (<1700-) | |
| [6.02* ] [5:3.03] Johann Wilhelm Wirtgen (<1686-1757) | DEU |
| [8.01* ] Elisabetha Schmid (<1688-1758) | DEU |
| [9.01* ] [5:8.01] Elisabetha Schmid (<1688-1758) | DEU |
