E. Strutz / K. Fix, Eifeler Geschlechterbuch 2 (DGB 123), Glücksburg 1958, S. 312 („Lühdorff“)
♥ = Vorfahren Peter LÜDORFF
| (....-1722)x1680
Arnold LÜDORFF | Katharina
| (1701-1747)x1734
Johann Abraham LÜDORFF |
| (1735-1807)x1776 | Franz STURSBERG >
| | | (1684-1746)x1707
| | Anna Katharina STURSBERG | Eva Katharina ELLER >
| (1712-1742)x1734 (1683-1719)
Peter Gottfried Isaak LÜDORFF |
| (1782-1860)x1810 | Hermann Melchior ENGELS
| | | (1695-1723)x1719
| | Johann Wilhelm ENGELS | Anna Gertrud EICKELBERG >
| | | (1720-1797)x1746 (1697-1764)
| | Maria Magdalena ENGELS |
| (1749-1794)x1776 | Peter REINSHAGEN
| | | (1687-1752)x1715
| | Maria Katharina REINSHAGEN | Christina Magdalena HONSBERG >
| (1725-1807)x1746 (1692-1773)
|--Clara LÜDORFF
| (1820-1880)x1842 Johann Peter POENSGEN >
| | (1702-1754)x1725
| Johann Heinrich POENSGEN | Anna Maria AXMACHER >
| | (1729-1799)x1756 (1695-1782)
| Johann Heinrich POENSGEN |
| | (1760-1814)x1783 | Philipp Diedrich ROTSCHEIDT > ♥
| | | | (1711-1761)x1731
| | | Juliana Lucia Katharina ROTSCHEIDT | Maria Katharina SCHMITZ >
| | (1732-1801)x1756 (1712-1771)
| Johanna Katharina Wilhelmina POENSGEN |
(1784-1858)x1810 | Johann Abraham KNECHTGEN >
| | (1692-1756)x1721
| Johann Wilhelm KNECHT | Susanna Gertrud Henriette von BERGEN >
| | (1722-1798)x1753 (1690-1756)
| Johanna Maria Wilhelmina KNECHT |
(1761-1829)x1783 | Johannes BICK >
| | (1695-1780)x1720
| Johanna Katharina Magdalena BICK | Susanna Maria Magdalena PALAND >
(1726-1781)x1753 (1699-1782)