A cathedra is the throne of a bishop, found in the cathedral church of their diocese. The word derives from the Greek καθέδρα, meaning "seat", especially one used by a bishop or teacher; this term is
The cathedra of the pope in the apse of St. John Lateran, the cathedral church of Rome
Modern cathedra at the Cathedral of Our Lady of the Angels in Los Angeles
19th-century cathedra in Lichfield Cathedral
Bernini's massive sculptural reliquary for the Cathedra Petri or "Chair of Peter" in St. Peter's Basilica, Rome
In church governance, a diocese or bishopric is the ecclesiastical district under the jurisdiction of a bishop.
Cathedra
…Tertullian (c. 155 – c. 240?) was the first to use cathedra in the meaning of a bishop's see. Eventually, the main church of a diocese, used as the primary church by its bishop, received the title "cathedral". The cathedral is literally the church into which a bishop's official cathedra…
Like other dioceses, the Diocese of Rome has a cathedra, the official seat of the Bishop of Rome.
St Patrick's Cathedral, the seat of the Anglican Diocese of Armagh in the Church of Ireland