Biography
Constantius of Perugia
About Constantius of Perugia
Constantius of Perugia, known locally as Costanzo, is honoured as a bishop and martyr at the beginnings of the city’s Christian community. The diocesan tradition remembers him as its founding bishop and celebrates him on 29 January. His personal history, however, survives chiefly through narratives of martyrdom, rather than a contemporary account of his ministry.
In the story preserved by the diocesan proper, imprisonment and extraordinary deliverances precede his death. Guards become Christians, and a man named Anastasius shelters him. After further arrests, he is killed near the crossing associated with Foligno. These episodes belong to his hagiographic tradition. Their detailed itinerary and miraculous elements should not be mistaken for independently verified records.
Even his place in the episcopal succession needs qualification. Writing in the Catholic Encyclopedia, Umberto Benigni notes the martyr’s appearance in martyrologies but treats his identification as a bishop cautiously. Benigni distinguishes that early tradition from the better attested sixth-century bishop Herculanus. Constantius and Herculanus belong to different strands of Perugia’s sacred memory; they should not be combined into one life.
The church dedicated to Constantius preserves a more traceable history of devotion. The Italian bishops’ church census records the burial area in a diploma of 1027 and a rebuilding consecrated in 1205. In 1825, a public procession brought the relics back from the nearby basilica of San Pietro to the church bearing his name. These events document the care given to his shrine across later centuries, without settling every question about the martyr’s lifetime.
That remembrance continues in the luminaria, a procession carrying lights through the city. In his 2024 homily, Archbishop Ivan Maffeis connected it with gratitude for people serving the community: carers, charitable workers, clergy and those with civic responsibilities. He presented Constantius as a figure linking faith with the city’s shared history. The continuing feast honours an early Christian witness while inviting present-day service to neighbours.
Wondering how to weigh the stories and sources? Learn how to read a saint biography.