For 10 points, name this last Yorkist king, whose death at Bosworth Field ended the Wars of the Roses.
As a duke, this man formed the Council of the North in Scotland. This ruler was brought up under the tutelage of "the Kingmaker," the Earl of Warwick, and he later married Warwick's sister Anne Neville. This ruler fought at a battle in which the Duke of Norfolk perished and the Earl of Northumberland and Lord (*) Stanley deserted his side, leading to his defeat by Henry VII. He also allegedly had the "Princes in the Tower" killed. For 10 points, name this last Yorkist king, whose death at Bosworth Field ended the Wars of the Roses.
As a duke, this man formed the Council of the North in Scotland.
{Richard III} [prompt on Richard]