Among the nobles who encouraged the work of Caxton was the king's youngest brother, Richard Duke of Gloucester. Edward had never forgiven Clarence his desertion; and his impeachment in 1478 on a charge of treason, a charge soon followed by his death in the Tower, brought Richard nearer to the throne. Ruthless and subtle as Edward himself, the Duke was already renowned as a warrior; his courage and military skill had been shown at Barnet and Tewkesbury; and at the close of Edward's reign an outbreak of strife with the Scots enabled him to march in triumph upon Edinburgh in 1482. The sudden death of his brother called Richard at once to the front. Worn with excesses, though little more than forty years old, Edward died in the spring of 1483, and his son Edward the Fifth succeeded peacefully to the throne. The succession of a boy of thirteen woke again the fierce rivalries of the court. The Woodvilles had the young king in their hands; but Lord Hastings, the chief adviser of his father, at once joined with Gloucester and the Duke of Buckingham, the heir of Edward the Third's youngest son and one of the greatest nobles of the realm, to overthrow them. The efforts of the queen-mother to obtain the regency were foiled, Lord Rivers and two Woodvilles were seized and sent to the block, and the king transferred to the charge of Richard, who was proclaimed by a great council of bishops and nobles Protector of the Realm. But if he hated the queen's kindred Hastings was as loyal as the Woodvilles themselves to the children of Edward the Fourth; and the next step of the two Dukes was to remove this obstacle. Little more than a month had passed after the overthrow of the Woodvilles when Richard suddenly entered the Council-chamber and charged Hastings with sorcery and attempts upon his life. As he dashed his hand upon the table the room filled with soldiery. "I will not dine," said the Duke, turning to the minister, "till they have brought me your head." Hastings was hurried to execution in the courtyard of the Tower, his fellow-counsellors thrown into prison, and the last check on Richard's ambition was removed. Buckingham lent him his aid in a claim of the crown; and on the twenty-fifth of June the Duke consented after some show of reluctance to listen to the prayer of a Parliament hastily gathered together, which, setting aside Edward's children as the fruit of an unlawful marriage and those of Clarence as disabled by his attainder, besought him to take the office and title of king. [Sidenote: Henry Tudor]