Principality of Grubenhagen Fürstentum Grubenhagen | |||||||||
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| 1291–1596 | |||||||||
 Coat of arms
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| Status | Principality | ||||||||
| Capital | Einbeck, Herzberg from 1486 | ||||||||
| Common languages | Eastphalian | ||||||||
| Historical era | Middle Ages | ||||||||
• Henry the Admirable Prince of Grubenhagen | 1291 | ||||||||
• Joined Lower Saxon Circle | 1500 | ||||||||
• Line extinct, annexed by Wolfenbüttel | 1596 | ||||||||
• Ceded to Lüneburg | 1617 | ||||||||
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The Principality of Grubenhagen was a subdivision of the Duchy of Brunswick-Lüneburg, ruled by the Grubenhagen line of the House of Welf from 1291. It is also known as Brunswick-Grubenhagen. The principality fell to the Brunswick Principality of Lüneburg in 1617; from 1665 the territory was ruled by the Calenberg branch of the Welf dynasty.