A. Blömer, Die Viersener Vorfahren der Maria Catharina Weyer (1800-1862), Mönchengladbach 1999, S. 25
__ | Heinrich WEYER |__ | (1580-....)x1605 Hermann WEYER | __ | (1610-....)x1635 | | | | Sibylla |__ | x1605 Heinrich WEYER | __ | (1644-1710)x1667 | | | | ___________________|__ | | | | | Maria | __ | x1635 | | | |___________________|__ |--Peter WEYER | (1670-1743)x1693 __ | | | ___________________|__ | | | Peter HAGENS | __ | | x1640 | | | | |___________________|__ | | | Helena HAGENS | __ (1645-1711)x1667 | | | ___________________|__ | | | Grietgen | __ x1640 | | |___________________|__