H.F. Macco, Geschichte und Genealogie der Familie Pastor, Aachen 1905, S. 105 („Hasselkap“!)
C. Pick, Familienbuch Lennep 1654-1809, Plaidt 2014, S. 1089
___________________ | _________________________|___________________ | _____________________| ___________________ | | | | |_________________________|___________________ | Johannes HASSELKUS | ___________________ | (1692-1777)x1715 | | | | _________________________|___________________ | | | | |_____________________| ___________________ | | | | |_________________________|___________________ |--Johann Wilhelm HASSELKUS | (1725-1808)x1752 Sirach STURSBERG > | | (1575-1640) | Franz STURSBERG | N. | | (1615-1680)x1645 | Johannes STURSBERG | | | (1654-1725)x1677 | Peter GROTE | | | | | | | Margaretha GROTE | Eva | | (1620-1685)x1645 | Anna Katharina STURSBERG | (1692-1778)x1715 | Peter FUHRMANN > | | (1600-1673) | Martin FUHRMANN | Katharina | | (1621-1674)x1650 (1600-1676) | Katharina FUHRMANN | ___________________ (1660-1712)x1677 | | | Christina aus der BEEK |___________________ (1625-....)x1650