Looking for John Priest Born North Curry Somerset

We are researching my wife's family tree, the Priest family from North Curry. One person, John Priest was born in 1821 and we have established he joined the Somerset Light infantry as a Baker/confectioner, with the last posting shown as Winchester Barracks in about 1851 and was discharged in 1860. We can find no other trace of him except that on discharge he deferred his pension. Are there an family members who can assist with information