The Diocese of Exeter is a Church of England diocese covering the county of Devon. It is one of the largest dioceses in England. The Cathedral Church of St Peter in Exeter is the seat of the diocesan Bishop of Exeter. It is part of the Province of Canterbury. The diocesan bishop is assisted by two suffragan bishops, the Bishop of Crediton and the Bishop of Plymouth. The See of Crediton was created in 1897 and the See of Plymouth in 1923.