Sixtus III (d. 440) was pope from July 31, 432 to August 18, 440. Events September 29 - Leo succeeds Sixtus as Pope. ... The Pope is the Catholic Bishop and patriarch of Rome, and head of the Roman Catholic Church and the Eastern Catholic Churches. ... July 31 is the 212th day (213th in leap years) of the year in the Gregorian Calendar, with 153 days remaining, as the final day of July. ... Events July 31 - Sixtus is elected to succeed Celestine as Pope. ... August 18 is the 230th day of the year (231st in leap years) in the Gregorian Calendar. ... Events September 29 - Leo succeeds Sixtus as Pope. ...

The name of Sixtus is often connected with a great building boom in Rome: Santa Sabina on the Aventine Hill was dedicated during his pontificate and he built Santa Maria Maggiore, whose dedication to Mary the Mother of God reflected his acceptance of the Ecumenical council of Ephesus which closed in 431. At that council the debate over Christ's human and divine natures turned on whether Mary could be called the "Mother of Jesus" as a human only or the "Mother of Christ" as both God and Man. The council gave her the Greek title Theotokos ("God-bearer"), and the dedication of the large church in Rome is a response to that. Categories: Italy-related stubs | Basilicas | Churches of Rome ... The Aventine Hill is one of the seven hills that ancient Rome was built on. ... Saint Mary Major, in Italian, Santa Maria Maggiore, is one of the five great ancient basilicas of Rome, Italy. ... In Christianity and Islam, Mary (Judæo-Aramaic מרים Maryām Bitter; Septuagint Greek Μαριαμ, Mariam, Μαρια, Maria; Arabic: Maryem, مريم) is the mother of Jesus and the betrothed of Joseph. ... In Catholicism and Eastern Orthodoxy, an ecumenical council is a meeting of the bishops of the whole church convened to discuss and settle matters of Church doctrine and practice. ... The Council of Ephesus was held in Ephesus, Asia Minor in 431 under Emperor Theodosius II, grandson of Theodosius the Great. ... Events June - Council of Ephesus: Nestorianism is rejected, the Nicene creed is declared to be complete. ... Russian Orthodox Icon of the Theotokos Theotokos is a Greek word that means God-bearer or Mother of God. It is a title assigned by the early Christian Church to Mary, the mother of Jesus, at the Third Ecumenical Council held at Ephesus in 431. ...

One of his main concerns was in restoring peace between Cyril of Alexandria and the Syrians. Cyril I (376 – June 27, 444), surnamed The Pillar of Faith, was Pope of Alexandria. ...

He also maintained the rights of the pope over Illyria and the position of the archbishop of Thessalonica as head of the Illyrian church. In classical history, Illyria or Illyricum or Illyrikon was a region of the western Balkan Peninsula inhabited by the tribes and clans of Illyrians, an ancient people who probably spoke an Indo-European language (the Illyrian languages). ... In Christianity, an archbishop is an elevated bishop heading a diocese of particular importance due to either its size, history, or both, called an archdiocese. ... The White Tower The Arch of Galerius Map showing the Thessaloníki prefecture Thessaloníki (Θεσσαλονίκη) is the second-largest city of Greece and is the principal city and the capital of the Greek region of Macedonia. ...

Saint Celestine I was pope from 422 to 432. ... Popes buried in St. ... Leo I was Pope from 440 to 461. ...