C. O. Langen, Chronik der Familie Johann Jakob Langen in Köln, Mönchengladbach 1899, S. 114
___________________________________ | ________________________________|___________________________________ | _______________________________| ___________________________________ | | | | |________________________________|___________________________________ | Karl MENNIER | ___________________________________ | (1814-1892) | | | | ________________________________|___________________________________ | | | | |_______________________________| ___________________________________ | | | | |________________________________|___________________________________ |--Anna MENNIER | (1863-....)x1889 Heinrich Georg RUHFUS | | (1721-1805)x1756 | Heinrich Arnold RUHFUS | Anna Katharina REES > | | (1774-1833)x1796 (1735-1805) | Johann Wilhelm Arnold RUHFUS | | | (1798-....)x1823 | Gisbert Wilhelm Ludwig SCHMEMANN > | | | | (1730-1807)x1756 | | | Magdalena Katharina SCHMEMANN | Katharina Elisabeth BALTHASAR | | (1765-1828)x1796 (1730-1784) | Luisa Helena Henriette RUHFUS | ___________________________________ (1823-1865) | | | ________________________________|___________________________________ | | | Anna Dorothea ANDRES | ___________________________________ (1803-....)x1823 | | |________________________________|___________________________________