Catherine of Valois (27 October 1401 – 3 January 1437) was the queen consort of England from 1420 until 1422. A daughter of Charles VI of France, she married Henry V of England, and gave birth to his heir Henry VI of England. Her liaison (and possible secret marriage) with Owen Tudor proved the springboard of that family's fortunes, eventually leading to their grandson's elevation as Henry VII of England. Catherine's older sister Isabella was queen of England from 1396 until 1399, as the child bride of Richard II.