William of Winchester, also called in English William of Lunenburg or William Longsword, a member of the House of Welf, was heir to his family's allodial lands in the Duchy of Saxony after the deposition of his father, Duke Henry the Lion in 1180.... Wikipedia
Born: April 11, 1184, Winchester, United Kingdom
Died: December 13, 1213 (age 29 years), Lüneburg, Germany
Parents: Henry the Lion and Matilda of England, Duchess of Saxony
Grandchildren: Albert I, Duke of Brunswick, John, Duke of Brunswick-Lüneburg, Otto I. von Braunschweig-Lüneburg, and more
Grandparents: Henry II of England, Henry X, Duke of Bavaria, Eleanor of Aquitaine, and more
Children: Otto I, Duke of Brunswick-Lüneburg
Spouse: Helena of Denmark (m. 1202)