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Facts and Events
References
- ↑ WICHMANN [II], son of BILLUNG & his wife --- (-23 Apr 944)., in Cawley, Charles. Medieval Lands: A prosopography of medieval European noble and royal families.
- ↑ 2.0 2.1 Stammtafel Billung auf Wikipedia DE, in Wikipedia: The Free Encyclopedia
[[1]], gefunden 2015.
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