- 27 July since 1922
- formerly 6 April
- sometimes kept on 1 August
- 8 April in the Greek Church
- feast confined to local calendars since 1969
Son of Priscus. May have been related to Emperor Valentinian. May have worked with Saint Ambrose of Milan. Deacon in Rome, Italy in 416. Almost nothing else is known about Celestine before his unanimous election as 43rd pope.
Ordered the bishops of Vienne and Narbonne in Gaul to correct doctrinal errors and abuses. He sent Saint Germanus of Auxerre to Britain to oppose Pelagianism in 429, and later wrote a treatise himself against semi-Pelagianism. Opposed the Manichaeans, Donatists, Noviatians whose heresies were spreading. Convened a council in Rome in 430, sent legates to the General Council of Ephesus in 431 to condemn Nestorianism, excommunicated Nestorius and deposed him. Dispatched Palladius to evangelize Ireland in 431.
Friend of and correspondent with Saint Augustine of Hippo; their letters indicate that Rome was the final authority for theology in the 5th century. Restored the basilica of Saint Mary Travestere after it had been damaged in Alaric’s sack of Rome. He worked to reform the clergy of Gaul, and ordered that absolution should never be denied to the dying who were sincere in their repentance.
- Campania, Italy
- 27 July 432 in Rome, Italy of natural causes
- buried in the cemetery of Priscilla in Rome
- his tomb is decorated with painted scenes of the Council of Ephesus
- relics translated to the church of Saint Praxedes on 820
- “Pope Saint Celestine I“. CatholicSaints.Info. 25 July 2015. Web. 21 January 2017. <>