Caius was Bishop of Milan in early 3rd-century. He is honoured as a Saint

Saint

A saint is a holy person. In various religions, saints are people who are believed to have exceptional holiness.In Christian usage, "saint" refers to any believer who is "in Christ", and in whom Christ dwells, whether in heaven or in earth...

 in the Catholic Church and his feast day is on September 27.

Life

Almost nothing is known about the life and the episcopate of Caius, except that he was bishop of Milan in early 3rd-century, that he died on the 26 September and that his corpse was allegedly buried in a cemetery in the area of the Basilica Naboriana, now demolished. His relics were later translated

Translation (relics)

In Christianity, the translation of relics is the removal of holy objects from one locality to another ; usually only the movement of the remains of the saint's body would be treated so formally, with secondary relics such as items of clothing treated with less ceremony...

 into the near Basilica of Sant'Ambrogio

Basilica of Sant'Ambrogio

The Basilica of Sant'Ambrogio is a church in Milan, northern Italy.-History:One of the most ancient churches in Milan, it was built by St. Ambrose in 379-386, in an area where numerous martyrs of the Roman persecutions had been buried. The first name of the church was in fact Basilica...

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Middle age texts, such as the Historia Dataria dated 11th-century, add biographic details which are to be considered legendary, such as his presence in Rome at the martyrdom of Saint Peter

Saint Peter

Saint Peter or Simon Peter was an early Christian leader, who is featured prominently in the New Testament Gospels and the Acts of the Apostles. The son of John or of Jonah and from the village of Bethsaida in the province of Galilee, his brother Andrew was also an apostle...

 and Saint Paul and the conversion by him of Saints Vitalis

Vitalis of Milan

Saint Vitalis of Milan, known as San Vitale in Italian and Saint Vital in French, was an early Christian martyr.-Biography:Vitalis was a wealthy citizen of Milan, perhaps a soldier. He was married to Saint Valeria, and they were the parents of the perhaps legendary Saints Gervasius and Protasius...

, Valeris

Valeria of Milan

Saint Valeria of Milan , or Saint Valérie, according to Christian tradition, was the wife of Vitalis of Milan, and the mother of Saint Gervase and Saint Protase, although other traditions make her a virgin martyr rather than a wife and mother.She was martyred for burying Christian martyrs, and then...

 and Gervasius and Protasius

Gervasius and Protasius

Saints Gervasius and Protasius are venerated as Christian martyrs, probably of the 2nd century....

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