Henry IV restored the estate and Sir John died at Cooling, 1408.
He was buried at Greyfriars, London, though his brass is near his wife in the church of St Mary Magdalene, Cobham.
According to a lengthy article by Mr. J. G. Waller entitled "The Lords of Cobham, their Monuments and the Church," published in Volume 11 (1877) of Archaeologia Cantiana, the bulletin of the Kent Archaeological Society, at the time of his death Lord John Cobham was approximately 92 years old.
This route had been essential for traffic between London and Dover (the port for France and hence continental Europe) since Roman times.
This biography of a baron or baroness in the Peerage of England is a stub.