Wars of the Roses the Hundred Years' War, unfolding the structural problems of feudalism, combined with the mental infirmity and weak rule of King Henry VI which revived interest in Richard of York's claim to the throne. Historians disagree on which of these factors to identify as the main reason for the wars. With the Duke of York's death, the claim transferred to his heir, Edward, who later became the first Yorkist king of England, as Edward IV. He reigned from 1461, interrupted by a Lancastrian uprising and reinstallment of Henry VI in 1470 to 1471, until his sudden death in 1483. His son
Ralph Hastings (died 1495) to the crown by the attainder on 4 November 1461 of Sir William Vaux, later slain at Tewkesbury. He held numerous offices during the reign of Edward IV, including Keeper of the Lions and Leopards in the Tower of London. In 1470 he was Controller of Customs in Lynn, Norfolk, as well as Controller of Petty Customs in London. He was High Sheriff of Northamptonshire in 1471, and represented the county in Parliament as Knight of the Shire in 1472. In 1472 he and his eldest brother, William Hastings, 1st Baron Hastings, were granted licence to found a guild at