L. Müller-Westphal, Wappen und Genealogien Dürener Familien, Düren 1989, S. 641, 937
__ | __________________________|__ | ________________________| __ | | | | |__________________________|__ | Peter von ZEVEL | __ | (1460-1532)x1490 | | | | __________________________|__ | | | | |________________________| __ | | | | |__________________________|__ |--Gertrud von ZEVEL | (....-1545)x1520 __ | | | Heinrich von WEISWEILER |__ | | (1415-1496)x1440 | Johann von WEISWEILER | __ | | (1445-1510)x1470 | | | | | Gertrud |__ | | (....-1484)x1440 | Gertrud von WEISWEILER | __ (1470-1532)x1490 | | | __________________________|__ | | | Gertrud von MARKEN | __ (1450-1511)x1470 | | |__________________________|__