deaths
March 22, 1421
Thomas of Lancaster, 1st Duke of Clarence, English soldier and politician, Lord High Steward of England (born 1388)

Thomas of Lancaster, Duke of Clarence
Thomas of Lancaster, Duke of Clarence was a medieval English prince and soldier, the second son of Henry IV of England, brother of Henry V, and heir to the throne in the event of his brother's death. He acted as counselor and aide to both.
Lord High Steward
The Lord High Steward is the first of the Great Officers of State in England, nominally ranking above the Lord Chancellor.