A. Blömer, Ahnenliste der Geschwister Wienandts zu Rheydt, Mönchengladbach 1984, S. 86 („Bilgen Neiper oder Gütges“)
A. Blömer, Ahnenliste Johann Peter Keller, * 3.4.1935 in Rheydt, Mönchengladbach 1987, S. 74
___________________ | ___________________|___________________ | GÜTGES | ___________________ | x1605 | | | |___________________|___________________ | Adolf GÜTGES | ___________________ | (1605-....)x1630 | | | | ___________________|___________________ | | | | | N. | ___________________ | x1605 | | | |___________________|___________________ |--Sibylla GÜTGES | (1637-1699)x1660 Adam NIEPER | | (1520-1553) | Wilhelm NIEPER | N. | | (1545-1583)x1575 | Peter NIEPER | | | (1575-1640)x1603 | to JAEPEN > | | | | (1510-1583) | | | to JAEPEN | N. | | (1555-1583)x1575 | Eva NIEPER | ___________________ (1605-....)x1630 | | | ___________________|___________________ | | | Sibylla | ___________________ (....-1621)x1603 | | |___________________|___________________