Pope Saint Sixtus III
(Latin: semtus, the sixth)
Reigned from 31 July 432 to 18 August 440.
Born in Rome, Italy; died there on 18 August 440.
During his pontificate he was falsely accused of favoring Nestorianism and Pelagianism, because of his conciliatory disposition during their controversies.
He
- approved of the Acts of the Council of Ephesus
- defended the supremacy of the pope over Illyricum, against the local bishops and Proclus of Constantinople
- restored the Basilica of Liberius
- beautified Saint Peter's, and the Lateran Basilica
Feast, 28 March.
New Catholic Dictionary