![The arms of Cardinal Hoyos displayed in SS. Nome di Maria al Foro Traiano](http://upload.wikimedia.org/wikipedia/commons/thumb/8/82/Castrill%C3%B3n_Hoyos_coa.jpg/100px-Castrill%C3%B3n_Hoyos_coa.jpg)
Ecclesiastical heraldry is the tradition of heraldry developed by Christian clergy. Within the Roman Catholic Church, every bishop has his own personal coat of arms. The shield usually combines the bishop's personal attributes with those of his diocese, and may change if he is appointed to a different position. Around the shield are other elements corresponding to the position in the hierarchy, including the Roman galero (or gallero), the cross, the mitre and the crosier. With modifications, similar customs are followed by clergy in the Anglican Church, the Eastern Rite Catholic Churches, and the Eastern Orthodox Churches. The Papal coat of arms has its own heraldic customs. (more...)