E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Chair of St. Peter (The).
The office of the Pope of Rome, said to be founded by St. Peter, the apostle; but St. Peters Chair means the Catholic festival held in commemoration of the two episcopates founded by the apostle, one at Rome, and the other at Antioch (January 18th and February 22nd).