Conrad III, Count of Wernigerode

Conrad III, Count of Wernigerode, ruled the Harz county from 1297, initially alongside his father Albert V, until his death in 1339. He married Helen, a daughter of Duke John I of Brunswick-Lüneburg.

In 1338 he granted land at Neustadt whose income was to maintain the chaplain of the chapel on the Harzburg. With his son Conrad IV he bound himself by a service treaty to Bishop Henry III of Hildesheim, in the bishop's long conflict over the Hildesheim see.