Answer
The answer is "Warwick the Kingmaker". Richard Neville, 16th Earl of Warwick, was a leading figure in the Wars of the Roses, a series of civil wars in England in the 15th century. He was known as the "Kingmaker" because of his role in deposing and restoring kings during the conflict. The other epithets mentioned are accurate descriptions of Neville's role and influence during the Wars of the Roses.