According to his legend, of which four versions exist, he was arrested during the persecutions of Antoninus (some sources say Marcus Aurelius) and whipped, and then forced into a stove along with his companions, from which all escaped unharmed.

[1] The accounts of his martyrdom state that his body was carried to Perugia and buried near the site of the present-day cathedral there.

His relics were translated in 1825 with great solemnity to a new altar at the present-day church of San Costanzo.

On his feast day, "torcolo", a ring-shaped cake made of pine nuts, raisins, and dried fruit, is a traditional food in Perugia.

He frequently appears in the company of another Perugian patron saint, Sant'Ercolano (Herculanus of Perugia).