Edward Willes was an Anglican bishop who was Bishop of St David's and later Bishop of Bath and Wells and one of the most prominent English cryptanalysts of his time.
Richard Trevor was an English prelate of Welsh descent, who served as bishop of St Davids from 1744 to 1752 and bishop of Durham from 1752 until his death.
The Honourable and Reverend Richard Trevor, Lord Bishop of Durham; an engraving by Joseph Collyer, modeled after a drawing by R. Hutchinson