Constantius is venerated as a member of the legendary Theban Legion. Similar to the cults of Chiaffredo at Crissolo, Bessus at Val Soana, Tegulus at Ivrea, Magnus at Castelmagno, and Dalmatius at Borgo San Dalmazzo, the cult of Constantius was linked with that of the Theban Legion to lend antiquity to a local saint about whom nothing was really known.