Thomas of Lancaster, 1st Duke of Clarence
Thomas of Lancaster, 1st Duke of Clarence (29 September 1388–22 March 1421) was the second son of King Henry IV of England and his first wife, Mary de Bohun. He was killed at the Battle of Beaugé in France.
| Preceded by: The Duke of Lancaster | Lord High Steward 1399–1421 | Succeeded by: — |
| Preceded by: New Creation | Duke of Clarence | Succeeded by: Extinct |
| Earl of Albemarle |
