Principality Of Grubenhagen
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. Geography The principality was located on the southwestern edge of the Harz mountain range in present-day South Lower Saxony. It included two separate territories, one around the town of Einbeck with Grubenhagen Castle, and another domain around the towns of Osterode and Duderstadt (ceded to Mainz in 1366) with Clausthal, Herzberg, and Herzberg Castle. The dominion also comprised the eastern exclave of Elbingerode, today part of Saxony-Anhalt. History Grubenhagen was split off from the Brunswick Principality of Wolfenbüttel in 1291, when the sons of late Duke Albert the Tall (1236–1279) finally divided their heritage. Its first ruler w ...
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Henry I, Duke Of Brunswick-Lüneburg
Henry I (August 1267 – 7 September 1322), Duke of Brunswick-Lüneburg, called the Admirable (german: Heinrich der Wunderliche, la, Henricus Mirabilis), a member of the House of Welf, was the first ruler of the Principality of Grubenhagen from 1291 until his death. Life He was the eldest son of the Brunswick duke Albert the Tall and his second wife Adelaide, daughter of Margrave Boniface II of Montferrat. His father had ruled the Duchy of Brunswick-Lüneburg jointly with his brother John, until both divided their territory in 1269. Albert went on to rule the Principality of Wolfenbüttel until his death in 1279. Henry first ruled the Brunswick principality of Wolfenbüttel jointly with his younger brothers Albert II the Fat and William. In 1291 they again divided the territory; Henry received the part that came to be known as Principality of Grubenhagen. It included the cities of Einbeck, half of Hamelin, Clausthal, Amelungsborn, Duderstadt, Herzberg, and Osterode. ...
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