sentences:  The following list outlines the genealogy supporting male heirs ascendant to the throne during the conflict, and the roles of their cousins.However to mobilise arms and wealth, significant major protagonists were Richard Neville, 16th Earl of Warwick ("The Kingmaker"), Edmund Beaufort, 4th Duke of Somerset and Henry Percy, 3rd Earl of Northumberland and their families.A less powerful but determining role was played by Humphrey Stafford, 1st Duke of Buckingham and Elizabeth Woodville and their families.