Title: Pio nono, pontifici maximo ecclesiae Romano-Catholicae, anno vertente concilium oecumenicum convocaturo, patribusque ad hoc concilium convocandis
Subjects: Popes, Primacy, Vatican Council (1st : 1869-1870 : Basilica di San Pietro in Vaticano) (uri) http://id.loc.gov/authorities/names/n50000581 (uri) http://viaf.org/viaf/sourceID/LC|n50000581
People: Pius IX Pope (1792-1878)