As the official ecclesiastical seat of the Pope, Saint John Lateran is the Papal "cathedra". An infallible decree by a pope is often referred to as an "ex cathedra" statement. This doctrine was proclaimed a dogma "ex cathedra" by Pope Pius IX in 1854. His cathedra (bishop's throne) still stands in the church. In their centre, on a raised platform, stands the papal cathedra. The cathedra (bishop's throne) was placed in the chancel. It defines "ex cathedra" the dogma of the Assumption of the Blessed Virgin Mary. The bishop's seat ("cathedra") is at Winchester Cathedral in Hampshire. A "cathedra", or bishop's throne, is what makes the church a cathedral. The word cathedral takes its name from "cathedra", or Bishop's Throne (In ). The cathedral is literally the church into which a bishop's official "cathedra" is installed. His bishop, Augustin-Magloire Blanchet, whose cathedra was in Vancouver, Washington, gave Fr. This symbolic chair is also known as the bishop's "cathedra". The bishop's throne or "cathedra" is often located in this space. This is the bishop's "cathedra" and is often called the throne.