A. Fülling, Stammtafel der Familie Eickhorn aus Solingen, Solingen [1983], S. 29
__ | __|__ | Arnold KNECHTGEN | __ | x1672 | | | |__|__ | Johannes KNECHTGEN | __ | (1673-1762)x1700 | | | | __|__ | | | | | Johanna WESTHOFF | __ | (1647-1701)x1672 | | | |__|__ |--Johann Abraham KNECHTGEN | (1703-1755)x1735 __ | | | __|__ | | | Engelbert HARTKOPF | __ | | (1645-....)x1678 | | | | |__|__ | | | Katharina HARTKOPF | __ (1678-....)x1700 | | | __|__ | | | N. | __ (....-1699)x1678 | | |__|__