William of Winchester, also called 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.
- Occupation
- aristocrat, Mister, progenitor
- Citizenship
- Germany
- Born
- April 11, 1184
- Died
- December 12, 1213