William II of Weimar
William II the Great 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 of Weimar|William III]
- Poppo I, [Margrave of Carniola|Poppo]
- Agnes, who likely married Frederick I, [Count Palatine of Saxony]