Inscription in French: The Founder of this place once called Cobham was made and formed out of the dust of the earth and into the earth and to the earth he has again returned. May the Holy Trinity have mercy on his soul."
He was founder of the College, 1362, for five priests to say daily masses for the response of the souls of his ancestors
John was summoned to Parliament as Johanni de Cobham de Kent an d as Johanni de Cobham chivaler. He went on several French expeditions, made Banneret in 1370, founded the college of Cobham in 1362, became the ambassador to Rome in 1367, appointed a Trier of Petitions in Parliament in 1377.
John received a permit to crenellate by Richard II in 1381, and built the Cooling Castle.