Name: King Henry III
Born: October 1, 1207 at Winchester
Parents: King John and Isabella of Angouleme
Relation to Elizabeth II: 20th great-grandfather
House of: Plantagenet
Ascended to the throne: October 18, 1216 aged 9 years
Crowned: October 28, 1216 at Gloucester and May 17, 1220 at Westminster Abbey
Married: Eleanor of Provence, Daughter of Raymond Berenger
Children: Six sons including Edward I, and three daughters
Died: November 16, 1272 at Westminster, aged 65 years, 1 month, and 16 days
Buried at: Westminster Abbey
Reigned for: 56 years, and 29 days
Succeeded by: his son Edward

King of England from 1216, when he succeeded John, but the royal powers were exercised by a regency until 1232, and by two French nobles, Peter des Roches and Peter des Rivaux, until the barons forced their expulsion in 1234, marking the start of Henry's personal rule. His financial commitments to the papacy and his foreign favourites antagonized the barons who issued the Provisions of Oxford in 1258, limiting the king's power. Henry's refusal to accept the provisions led to the second Barons' War in 1264, a revolt of nobles led by his brother-in-law Simon de Montfort. Henry was defeated at Lewes, Sussex, and imprisoned, but restored to the throne after the royalist victory at Evesham in 1265. He was succeeded by his son Edward I.

On his release Henry was weak and senile and his eldest son, Edward, took charge of the government.