William of Rosenberg was a Bohemian nobleman. He served as High Treasurer and High Burgrave of Bohemia. Wikipedia
Born: March 10, 1535, Gallspach, Austria
Died: August 31, 1592 (age 57 years), Prague, Czechia
Great-grandparents: John II of Rosenberg, Anna Hlohovská, and Kaspar of Rogendorf
Grandparents: Vok II of Rosenberg and Wolfgang von Rogendorf
Parents: Jodock III of Rosenberg and Anna z Rogendorfu
Siblings: Peter Vok of Rosenberg
Spouse: Polyxena of Lobkowicz (m. 1587–1592)
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