Protasius (bishop of Milan)

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For the twin saint martyrs, see Gervasius and Protasius.
Archbishop of Milan
B3 Protaso 29m.JPG
Church Catholic Church
Appointed 328 AD
Term ended c. 343
Predecessor Maternus
Successor Eustorgius I
Personal details
Died c. 343
Feast day November 24
Venerated in Catholic Church
Shrines Oratorio di San Protaso

Protasius (Italian: Protaso) was Archbishop of Milan. He is honored as a saint in the Catholic Church, with his feast day celebrated on November 24, the day of his death.[1]


Almost nothing is known about the life of Protasius. He was elected bishop of Milan in 328, and served until his death, about 343.[2]

Athanasius of Alexandria, in his Apologia ad Constantium[3], mentioned that Protasius was with him when he spoke to the Roman Emperor Constantius II; this episode can be dated about 342 or 343.[4] In 343, Protasius attended the Council of Sardica and signed its decrees, standing up against the Arians and supporting the faith of the Council of Nicaea.[2]

Protasius died about 343 on November 24. His body was buried in Milan in the Church of San Vittore al Corpo (Saint Victor Maurus), where it is venerated stll. A late tradition, with no historical basis, associates Protasius with a Milanese family, the Algisi.[4]


  1. ^ Ruggeri, Fausto (1991). I Vescovi di Milano. Milano: NED. p. 9–10. ISBN 88-7023-154-2. (Italian)
  2. ^ a b Pasini, Cesare (1992). "Protaso di Milano, santo (sec. IV)". Dizionario della Chiesa Ambrosiana. 5. Milano: NED. p. 2969–2971. ISBN 88-7023-102-X. (Italian)
  3. ^ Athanasius. "Apologia ad Constantium, par 3". New Advent. Retrieved 17 October 2011. 
  4. ^ a b Cazzani, Eugenio (1996). Vescovi e arcivescovi di Milano. Milano: Massimo. p. 15. ISBN 88-7030-891-X. (Italian)