G. Dittrich / H.F. Friederichs, Deutsches Familienarchiv 30, 1966, S. 240 f. (ausführlich zu den Nachkommen)
♥ = Vorfahren _____________________________ | ____________________________|_____________________________ | Johann KEETMAN | _____________________________ | (1764-1827)x1786 | | | |____________________________|_____________________________ | Johann KEETMAN | _____________________________ | (1793-1865)x1823 | | | | ____________________________|_____________________________ | | | | | Luisa Friederika BERTHEAU | _____________________________ | (1768-1845)x1786 | | | |____________________________|_____________________________ |--Friedrich Emil KEETMAN | (1833-1902)x1860 Konrad WICHELHAUS > | | (1698-1774)x1722 | Johann Peter WICHELHAUS | Anna Maria SIEBEL > | | (1723-1801)x1747 (1693-1764) | Johannes WICHELHAUS | | | (1765-1820)x1791 | Johann Peter STEINBACH > | | | | (1690-1752) | | | Maria Gertrud STEINBACH | Maria VOGT > | | (1727-1794)x1747 (1689-1755) | Wilhelmina WICHELHAUS | (1799-1855)x1823 | Johannes MERKEN > | | (1690-1766)x1715 | Friedrich Wilhelm MERKEN | Maria Elisabeth VOLKMANN > | | (1727-1803)x1752 (1695-1762) | Maria Luisa MERKEN | (1761-1841)x1791 | Wilhelm KEUSENHOFF > | | (1701-1761)x1726 | Anna Katharina KEUSENHOFF | Maria Margaretha STEINBERG > ♥ (1730-1799)x1752 (1699-1740)