W. Vogeler, Die Essener Vorfahren Alfred Krupps, Essen 1961, S. 60
________________________ | ____________________|________________________ | ____________________| ________________________ | | | | |____________________|________________________ | Rötger op den GRAVEN | ________________________ | | | | | ____________________|________________________ | | | | |____________________| ________________________ | | | | |____________________|________________________ |--Katharina op den GRAVEN | x1645 ________________________ | | | Hinrich van AAKEN |________________________ | | (....-1582)x1528 | Johann van AAKEN | | | (1530-1575)x1557 | Heinrich KOPMANN > | | | | (....-1525) | | | Brigitta KOPMANN | Adelheid op der BORCH > | | x1528 | Margaretha van AAKEN | ________________________ | | | Johannes SCHREVEN |________________________ | | (....-1557)x1525 | Brigitta SCHREVEN | (1535-1585)x1557 | Johannes KRUKEN | | x1495 | Katharina KRUKEN | Bele (1495-1557)x1525