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.
The Battle of Baugé, from Les Vigiles de Charles VII
Henry IV, also known as Henry Bolingbroke, was King of England from 1399 to 1413. Henry was the son of John of Gaunt, Duke of Lancaster, himself the son of Edward III.
Illuminated miniature, c. 1402
Henry of Bolingbroke, flanked by the lords spiritual and temporal, claims the throne in 1399. From a contemporary manuscript, British Library, Harleian Collection
The coronation of Henry IV of England, from a 15th-century manuscript of Jean Froissart's Chronicles
Silver half-groat of Henry IV, York Museums Trust