The Stockwood Scrolls
This powerful conjurer is the leader of the Red Wizards allied with the Cult of the Dragon. Although long a member of the regime of Szass Tam, he left Thay to join the rebel Red Wizards allied with the Cult of the Dragon following the power vacuum left by the death of Rath Modar, the leader of that faction. Nahumon wished to become the new leader of the rebels, and engaged in a multi-month conflict with other rivals before taking the leadership.
Little is known about him, with only the above being known through the investigations of the Harpers. He is known to be of the conjuring school of wizardry in Thay, and in such undoubtedly has some links with the Nine Hells. Since he came to power, his Red Wizards have erected a powerful arcane forcefield protecting the Well of Dragons, thought to be powered by a source within Avernus itself.