Henry I, Duke of Brunswick-Grubenhagen
Member of the House of Welf
Henry I, Duke of Brunswick-Lüneburg, called the Admirable, a member of the House of Welf, was the first ruler of the Principality of Grubenhagen from 1291 until his death. Wikipedia
Born: August 1267
Died: September 7, 1322 (age 55 years), Salzderhelden, Einbeck, Germany
Great grandchildren: Eric I, Duke of Brunswick-Grubenhagen, Helvis of Brunswick-Grubenhagen, Elisabeth von Honstein-Kletterberg, and more
Parents: Albert I, Duke of Brunswick
Great-grandparents: William of Winchester, Lord of Lunenburg, Helena of Denmark, and Albert II, Margrave of Brandenburg