Christian Louis was Duke of Brunswick-Lüneburg. A member of the House of Welf, from 1641 until 1648 he ruled the Principality of Calenberg, a subdivision of the duchy, and, from 1648 until his death, the Principality of Lüneburg.
Christian Louis... Wikipedia
Born: February 25, 1622, Herzberg am Harz, Germany
Died: March 15, 1665 (age 43 years), Celle, Germany
Siblings: John Frederick, Duke of Brunswick
Great-grandparents: Ernest I, Duke of Brunswick, George I, Landgrave of Hesse-Darmstadt, John George, Elector of Brandenburg, and more
Spouse: Princess Dorothea Sophie of Schleswig-Holstein-Sonderburg-Glücksburg (m. 1653–1665)
House: Hanover