John I, Duke of Brunswick-Grubenhagen
John I, Duke of Brunswick-Grubenhagen (born: before 1322; died: 23 May 1367) was provost of the St. Alexandri Minster in Einbeck.
|John I, Duke of Brunswick-Grubenhagen|
|Died||23 May 1367|
|Noble family||House of Guelph|
|Father||Henry I, Duke of Brunswick-Lüneburg|
|Mother||Agnes of Meissen|
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