House of Plantagenet a near total victory over the French at the Battle of Agincourt. In subsequent years Henry recaptured much of Normandy and secured marriage to Catherine of Valois. The resulting Treaty of Troyes stated that Henry's heirs would inherit the throne of France, but conflict continued with the Dauphin. When Henry died in 1422, his nine-month-old son succeeded him as Henry VI of England. During the minority of Henry VI the war caused political division among his Plantagenet uncles, Bedford, Humphrey of Lancaster, 1st Duke of Gloucester, and Cardinal Beaufort. Humphrey's wife was accused of treasonable necromancy after two astrologers in
Succession to the British throne Ireland. She was not universally recognised and after nine days she was overthrown by the popular Mary. As Henry VIII's will had been approved by an Act of Parliament in 1544, Edward's contravening will was unlawful and ignored. Mary was succeeded by her half-sister, Elizabeth, who broke with the precedents of many of her predecessors, and refused to name an heir. Whilst previous monarchs (including Henry VIII) had specifically been granted authority to settle uncertain successions in their wills, the Treasons Act 1571 asserted that Parliament had the right to settle disputes, and made it treason to deny Parliamentary authority.