(1340–99), son of Edward III. John of Gaunt was effective ruler of England during the final years of his father's reign and the minority of Richard II. His son Henry Bolingbroke later became King Henry IV.
Definition of John of Gaunt in US English:
John of Gaunt
proper nounˌjän əv ˈɡônt
(1340–99), son of Edward III. He was the effective ruler of England during the final years of his father's reign and during the minority of Richard II. His son Henry Bolingbroke later became King Henry IV.