Sir John senior had seen his star rise with the Boleyn family, when he and Lady Shelton acquired the custody of Princess Mary at Hatfield House.
He served on the Boulogne campaign which ended in the triumphant parade of the king in the captured port town.
On the accession of Queen Mary in 1553 he elevated to the Privy Council in part at least by pledging to purchase an annuity for £60 expressing adherence to the Catholic regime.
Shelton was ever the practical politician, refusing to quit the parliamentary session before its dissolution by the monarch.
It appears from his inquisition post mortem that before dying he had disposed of all his estates apart from the Manor of Carrow.