- b.0988 in Wassenberg, Rheinland, Prussia
- b.1013 in Wassenberg, Rheinland, Prussia d.1082 in Wassenberg, Rheinland, Prussia
- b.1033 in Wassenberg, Rheinland, Prussia d.1075 in Wassenberg, Rheinland, Prussia
- b.~ 1063 in Wassenberg, Rheinland, Prussia d.1125
- b.~ 1091 in Wassenberg, Rheinland, Prussia d.1134 in Zutphen, Gelderland, Netherlands
- b.1065 in Wassenberg, Rheinland, Prussia