C. O. Langen, Chronik der Familie Johann Jakob Langen in Köln, Mönchengladbach 1899, S. 114 („Ruhfuss“)
____________________________ | Heinrich Georg RUHFUS |____________________________ | (1721-1805)x1756 Heinrich Arnold RUHFUS | | (1774-1833)x1796 | Johann Joachim REES > | | | (1707-....)x1732 | | Anna Katharina REES | Anna Katharina WENKER > | (1735-1805)x1756 (1709-1744) Johann Wilhelm Arnold RUHFUS | | (1798-....)x1823 | Arnold Gisbert SCHMEMANN > | | | (1688-1741)x1725 | | Gisbert Wilhelm Ludwig SCHMEMANN | Katharina Gertrud HILTROP > | | | (1730-1807)x1756 (1688-1734) | | Magdalena Katharina SCHMEMANN | ____________________________ | (1765-1828)x1796 | | | | Katharina Elisabeth BALTHASAR |____________________________ | (1730-1784)x1756 |--Luisa Helena Henriette RUHFUS | (1823-1865) ____________________________ | | | ___________________________________|____________________________ | | | ________________________________| ____________________________ | | | | | | |___________________________________|____________________________ | | | Anna Dorothea ANDRES | ____________________________ (1803-....)x1823 | | | ___________________________________|____________________________ | | |________________________________| ____________________________ | | |___________________________________|____________________________