Owen Tudor was a Welsh nobleman born around 1400. He is best known for his marriage to Catherine of Valois, the widow of King Henry V of England. Their union was significant as it connected the Welsh lineage to the English royal family. Owen Tudor's descendants played a crucial role in English history. His grandson, Henry VII, founded the Tudor dynasty, which ruled England from 1485 to 1603. This dynasty included notable monarchs such as Henry VIII and Elizabeth I, shaping the course of English history during the Renaissance and Reformation periods.