what land he held was granted by Richard II and Henry IV. His only real claim to fame was that he was the first of the Beaufort's, a family base born.
It seems John Beaufort was out shined by nearly all of his family, most had a role in an event that history remembers, John Beaufort is only really remembered as the bastard offspring of an adulterous affair. He died of an unknown illness on the 16th March 1410 at just forty years of age. Even in death he shares his tomb with his wife and her second husband in Canterbury Cathedral.
If you are interested in the family of Beaufort Nathan Amin's book The House of Beaufort can be purchased through via his website