King of England from 1413 to 1422, son of preceding, born at Monmouth; during the wars of his father's reign he gave evidence of his abilities as a soldier, distinguishing himself specially by his conquest of Wales; on his accession to the throne he renewed the claims put forward by Edward III. to the French crown, and with the support of his people embarked on his great struggle to win the kingdom of France; in 1415 he gained the glorious victory of Agincourt, strengthened his position by confirmed military successes, and by marrying Catherine, daughter of the French king, and by the treaty of Troyes got himself appointed regent of France and successor to the throne; he was idolised by his people as the perfect pattern of a warrior king, but he had neither the gifts of statesmanship nor the foresight of Edward I., to whom he is compared, and the English dominion which he established in France was too unsubstantial to endure (1388-1422).