Simplicius, Constantius and Victorinus (Victorian(us)) (Italian: Simplicio, Costanzo e Vittoriano) are venerated as Christian martyrs of the 2nd century.
[2] Simplicius, was, according to tradition, a Christian of the Abruzzi region who was executed along with his two sons, Constantius and Victorian, during the reign of Marcus Aurelius.
Finally, on 26 August 159, they were beheaded at Celano, at a spot called Aureum fontem ("Golden Springs"), identified by the writer of the Passio as the future site of the church of San Giovanni Vecchio in Celano, with the spring eventually becoming known as S. Ioannis in capite acquae.
[1] Evidence of their cult in the Marsica region can be found as early as the 11th century, when Bishop Pandolphus (Pandolfo) received a letter from Pope Stephen IX in 1057, which recognized the authenticity of the relics of the three martyrs, which were found underneath the principal altar of San Giovanni Vecchio, anciently the Collegiata di Celano.
[1] When the city was rebuilt on the Hill of San Vittorino, the relics were translated to the chapel of the new church there, on June 10, 1406, which occasioned the writing of the aforementioned Passio.