Sorcerer of Dol Guldur

A title given to the unknown dark magician who came out of the east and took up residence at Dol Guldur in Mirkwood during the Third Age. He went unrecognised for many centuries, and though some suspected he might be a Nazgûl, it was later revealed that he was none other than Sauron himself, recovering from his great defeat at the end of the Second Age.