William II of Weimar explained

William II the Great (c. 940/94524 December 1003) was Count of Weimar from 963 and Duke of Thuringia from 1002.

He was the eldest son of Count William I of Weimar.

Family

By an unknown wife, he had children:

• William III (died 16 April 1039)
• Poppo (died 13 July before 1044)
• Agnes, who likely married Frederick I, Count Palatine of Saxony (de)