L. Müller-Westphal, Wappen und Genealogien Dürener Familien, Düren 1989, S. 116
__ | ____________________|__ | ___________________| __ | | | | |____________________|__ | Bernhard KALS | __ | x1660 | | | | ____________________|__ | | | | |___________________| __ | | | | |____________________|__ |--Philipp Wilhelm KALS | (1675-....)x1705 __ | | | ____________________|__ | | | Hubert HERSTATT | __ | | (1600-1678)x1635 | | | | |____________________|__ | | | Elisabeth HERSTATT | __ (1639-....)x1660 | | | Achilles von BERG |__ | | | von BERG | __ (....-1648)x1635 | | | Martha |__