Article · Wikipedia archive · Last revised Aug 5, 2026

Autonomus

Saint Autonomus is a martyr saint. He is said to have been an Italian bishop who escaped the Diocletianic Persecution by migrating to Bithynia in Asia Minor. He evangelized the region, served as first bishop of Claudiopolis and was subsequently martyred.

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Autonomus
Bishop and Martyr
Bornunknown
Italy
Diedc. 313
Asia Minor
Venerated inRoman Catholic Church
Eastern Orthodox Church
Feast12 September
"Autonomus" is a frequent misspelling of "autonomous".

Saint Autonomus (Greek: Άγιος Αυτόνομος; died 313) is a martyr saint. He is said to have been an Italian bishop who escaped the Diocletianic Persecution by migrating to Bithynia in Asia Minor. He evangelized the region, served as first bishop of Claudiopolis and was subsequently martyred.

In the Eastern Orthodox Church, his feast day is celebrated on September 12.

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Further reading

Further reading

  • Clive Foss, "St. Autonomus and His Church in Bithynia," Dumbarton Oaks Papers, Vol. 41, Studies on Art and Archeology in Honor of Ernst Kitzinger on His Seventy-Fifth Birthday (1987), pp. 187–198.