Reign 1291–1322 Mother Adelheid of Montferrat Noble family Welf | Successor Henry II Predecessor none Name Henry Duke | |
Father Albert I, Duke of Brunswick-Luneburg Died September 7, 1322, Einbeck, Germany Spouse Agnes of Meissen (m. 1282) Parents Albert I, Duke of Brunswick-Luneburg Children Henry II, Duke of Brunswick-Grubenhagen Grandchildren Otto, Duke of Brunswick-Grubenhagen Grandparents Otto I, Duke of Brunswick-Luneburg, Matilda of Brandenburg, Duchess of Brunswick-Luneburg | ||
Henry I (August 1267 – 7 September 1322), Duke of Brunswick-Lüneburg, called the Admirable (German: Heinrich der Wunderliche, Latin: Henricus Mirabilis), a member of the House of Welf, was the first ruler of the Principality of Grubenhagen from 1291 until his death.
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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. Henry quarreled with his brother Albert, who had received the Principality of Göttingen, over the remaining belittled areas around Brunswick and Wolfenbüttel, but Albert prevailed, and Henry retreated to Grubenhagen. He took Einbeck as his residence.
In 1320, Henry was appointed Count Palatine of Saxony by the emperor. He died in 1322, and his three surviving sons who had not joined the Church divided his territory among each other.
Family
Henry married Agnes, daughter of Albert the Degenerate, Margrave of Meissen, in 1282. They had 16 children: