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John I, Duke of Brunswick-Grubenhagen

John I, Duke of Brunswick-Grubenhagen
Noble family House of Guelph
Father Henry I, Duke of Brunswick-Lüneburg
Mother Agnes of Meissen
Born before 1322
Died 23 May 1367(1367-05-23)

John I, Duke of Brunswick-Grubenhagen (born: before 1322; died: 23 May 1367) was provost of the St. Alexandri Minster in Einbeck.

He was the son of Duke Henry I "the Marvelous" of Brunswick-Grubenhagen and his wife Agnes of Meissen, daughter of Margrave Albert II of Meissen.


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