Adolph John I was Count Palatine of Kleeburg from 1654 until 1689 and was considered Prince of Sweden until 1660. He was the younger brother of King Charles X Gustav of Sweden. Wikipedia
Born: October 11, 1629, Stegeborg Castle, Sweden
Died: October 14, 1689 (age 60 years), Stegeborg Castle, Sweden
Great-grandparents: Gustav Vasa, Anna of Hesse, Margaret Leijonhufvud, and more
Uncle: Gustavus Adolphus