This man's ascent to the throne occurred due to his interaction with Earl Rivers at Stony Stratford, and he would later reconcile with Rivers' sister, Elizabeth Woodville.
While a duke, this man drove the Scots from Berwick-upon-Tweed and was appointed Governor of the North.  This man's ascent to the throne occurred due to his interaction with Earl Rivers at Stony Stratford, and he would later reconcile with Rivers' sister, Elizabeth Woodville. He was married to Anne Neville, and his brother George, Duke of Clarence was executed for treason during the reign of his predecessor, Edward IV. This monarch was replaced by Henry VII after he lost the War of the Roses, ending the house of York.  For 10 points, name this British king who was defeated and killed at the Battle of Bosworth Field.
While a duke, this man drove the Scots from Berwick-upon-Tweed and was appointed Governor of the North.  
{Richard III} or York [Prompt on partial]