A. Blömer, Die Vorfahren der Johanna Margarethe Schröders, Mönchengladbach 1991, S. 25
A. Blömer, Familien Seyben oder Sieben aus Beckrath, Mönchengladbach 1993, S. 55
___________________ | ____________________|___________________ | Rütger FRENTZEN | ___________________ | | | | |____________________|___________________ | Bartholomäus FRENTZEN | ___________________ | (....-1730)x1703 | | | | ____________________|___________________ | | | | | Gertrud EICKELSMANN | ___________________ | | | | |____________________|___________________ |--Johannes FRENTZEN | (1707-....)x1730 Otto FRANZEN > | | (1560-1612)x1586 | Franz OTTEN | Lene | | (1592-1663)x1621 | Johann OTTEN | | | (1633-1704)x1663 | Johannes ROELEN | | | | (1560-1629)x1586 | | | Barbara ROELEN | Anna ROELEN > | | (1595-1654)x1621 (1568-1624) | Barbara OTTEN | ___________________ (1675-....)x1703 | | | Wolter GELLERMANN |___________________ | | x1640 | Beatrix GELLERMANN | ___________________ (1640-1697)x1663 | | | Sibylla SCHMITZ |___________________ x1640