Which French princess did Henry V marry in 1420?

Henry V married the French princess Catherine of Valois in 1420.

Catherine was a daughter of King Charles VI of France and Queen Isabeau of Bavaria. Her marriage to Henry formed part of the Treaty of Troyes, negotiated after England’s military successes in France. The treaty recognized Henry as Charles VI’s heir and effectively disinherited Charles’s son, the Dauphin Charles.

The wedding took place on 2 June 1420, traditionally associated with Troyes Cathedral, although some accounts place the ceremony at the nearby parish church of Saint John. Catherine was crowned queen of England at Westminster Abbey on 23 February 1421. She and Henry had one child, the future Henry VI, born at Windsor in December 1421.

The marriage did not permanently unite the two kingdoms as the treaty intended. Henry died in 1422, followed shortly afterward by Charles VI, leaving the infant Henry VI as the English claimant. Catherine later became connected with the Tudor dynasty through her relationship with Owen Tudor, whose descendants included Henry VII. Isabella of France is an easy distractor because she was another French princess who became an English queen, but she married Richard II.