The youngest king to rule England was Henry VI, who ascended to the throne at the age of nine months old in 1422.
Henry VI was the only child of Henry V and Catherine of Valois. He was crowned king in Westminster Abbey on November 6, 1422, shortly after his father's death.
While Henry VI's reign was marked by periods of instability and conflict, including the Wars of the Roses, he is remembered for his piety and patronage of the arts.
Henry's early years were dominated by regents who ruled in his name. Despite his young age, he was a popular and respected figure throughout his life. He reigned for over 39 years, becoming one of the longest-reigning monarchs in English history.