About Calimerius
Lived 250 – 280 (aged 29–30). Calimerius was a catholic priest.
There is also a beatus named Calimerius of Montechiaro (c. 1430–1521).
Calimerius (, Byzantine Greek: Καλημέριος) (died 280 AD) was an early bishop of Milan. He is honoured as a Saint in the Catholic and Eastern Orthodox churches and his feast day is on July 31.
Life The only thing known for certain about him was that he was a bishop whose relics were conserved in the Basilica of Saint Calimerius in Milan, after his death. He was probably not a contemporary and disciple of Pope Telesphorus (2nd century), as is often stated, but lived in the third century, with an episcopate of 270–280.
Legends According to one version his legend, he was born to a noble Roman family, entered military service and reached the rank of officer when he was converted to Christianity by saints Faustinus and Jovita. According to another legend, he was born in Greece, and was educated at Rome. He was a disciple of Pope Telesphorus. He succeeded St. Castricianus (San Castriziano). He was ordained priest by Castricianus and served at the Basilica Fausta (now the church of Saints Vitalis and Agricola). At the death of Castricianus, he was elected bishop. As Hippolyte Delehaye writes, "To have lived amongst the Saviour's immediate following was ... honorable ... and accordingly old patrons of churches were identified with certain persons in the gospels or who were supposed to have had some part in Christ's life on earth."
Veneration Saint Ennodius, in an epigram, writes that the basilica of San Calimero was built in the fifth century to hold the relics of Calimerius.
The waters of a well said to have been the place of his death acquired special significance. Every July 31, his feast day, the sick would drink of this water. In times of drought, priests would put some of the miraculous water into a bottle and pour it over the fields.
There are basilicas dedicated to him at Pasturo and the Santuario della Madonna di San Calimero is located in Bolladello di Cairate.
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Important facts
Contemporaries
People whose lives overlapped Calimerius's
Frequently asked questions
Who was Calimerius?
Saint, Bishop of Milan
When was Calimerius born?
Calimerius was born in 250.
When did Calimerius die?
Calimerius died in 280 in Milan.
What was Calimerius's occupation?
Calimerius was a catholic priest.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Calimerius. https://biography.guide/calimerius/
MLA: "Calimerius." Biography.guide, https://biography.guide/calimerius/.
Chicago: "Calimerius." Biography.guide. https://biography.guide/calimerius/.
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