The Catholic Encyclopedia remarked that "the real story of the antipope was lost and he obtained in local Roman history the status of a saint and a confessor.

Being expelled from his See by the Arian emperor Constantius for defending the Catholic faith, and being put to the sword privately at Cera in Tuscany, he died gloriously.

It was afterwards brought to the Church of the Saints Cosmas and Damian, where, under the Sovereign Pontiff Gregory XIII, it was found beneath the altar with the relics of the holy martyrs Mark, Marcellian, and Tranquillinus, and with the latter was put back in the same place on 31 July.

In the same altar were also found the bodies of the holy martyrs Abundius, a priest, and Abundantius, a deacon, which were shortly after solemnly transferred to the church of the Society of Jesus, on the eve of their feast.

[7] The antipope Felix died, as stated above, on a 22 November, and his death was not a martyr's,[8] occurring when the Peace of Constantine had been in force for half a century.