Sodor And Man. The Diocese of Sodor and Man is a diocese of the Church of England. Originally much larger, today it covers just the Isle of Man and its adjacent islets. Today, the bishop's office is in Douglas and the cathedral is in Peel. The diocese is not generally called either Sodor diocese or Man diocese. Inspiration came on a visit to the Isle of Man, which forms the Diocese of Sodor and Man in 1950. Awdry noted that while there was an Isle of Man, there was no similar island of Sodor (the name derives from Old Norse Su