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Helen of Brunswick-Lüneburg

Helen of Brunswick-Lüneburg was a daughter of Duke John I of Brunswick-Lüneburg and Liutgard of Holstein. She married Count Conrad III of Wernigerode, whom her son Conrad IV succeeded in 1339.

References

  1. de.wikipedia.org/wiki/Johann_I._(Braunschweig-Lüneburg)
  2. de.wikipedia.org/wiki/Grafschaft_Wernigerode