 In 1750, he received an MA from Cambridge, and married Elizabeth Wade at St Mary and St Michael Church, Trumpington, Cambridgeshire.He was sent by the Society for the Propagation of the Gospel in Foreign Parts or Venerable Society to assist at St Paul's Church, Halifax, Nova Scotia under the auspices of the Bishop of London, while the rector William Tutty returned to London on private business, during which trip Tutty died in 1754.Breynton immediately took over as missionary and minister, or Rector, at St Paul's in 1754.