J.V. Bredt, Geschichte der Familie Siebel, Marburg 1937, S. 64 f., 274
A. Blömer, Ahnenliste Frau Elsbeth Kuhlen geb. Lüpges, Mönchengladbach 1979, S. 79
__ | ___________________|__ | Georg SCHELL | __ | (....-1611) | | | |___________________|__ | Peter SCHELL | __ | (....-1613)x1599 | | | | ___________________|__ | | | | | Christina BRANDTS | __ | (....-1590) | | | |___________________|__ |--Agnes SCHELL | (1610-....)x1635 __ | | | Peter GRAHERDS |__ | | (1490-1555) | Konrad GRAHERDS | __ | | (1530-1588) | | | | | Katharina |__ | | | Judith GRAHERDS | __ (1570-1654)x1599 | | | ___________________|__ | | | Katharina | __ (1540-1613) | | |___________________|__