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- b.0988 in Wassenberg, Rheinland, Prussia
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- b.1013 in Wassenberg, Rheinland, Prussia d.1082 in Wassenberg, Rheinland, Prussia
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- b.1033 in Wassenberg, Rheinland, Prussia d.1075 in Wassenberg, Rheinland, Prussia
- b.~ 1063 in Wassenberg, Rheinland, Prussia d.1125