Tags: Noble.
Henry (August 1267 – 7 September 1322 Salzderhelden) Duke of Brunswick-Lüneburg called the Admirable (Latin Henricus Mirabilis) was the first ruler of the Principality of Grubenhagen.The eldest son of Albert I Duke of Brunswick-Lüneburg he first ruled the Principality of Wolfenbüttel after his father’s death jointly with two of his brothers. In 1291 the brothers divided the territory; Henry received the part that came to be known as Principality of Grubenhagen.