According to Agathangelus, Tiridates went to Rome with Gregory, Aristaces, son of Gregory, and Albianos, head of the other priestly family, to make a pact with Constantine, newly converted to the faith, and receive a pallium from Silvester.
Pietro in Ciel d'Oro within a splendid tomb, for which Gerbert, afterwards Pope Silvester II., wrote an inscription.
Melchiades was preceded and followed by Eusebius and Silvester I.
But the supposed letter of Silvester is a later forgery; and in moo the way of the Christian to Jerusalem was still free and open.
In 747 Carloman unexpectedly abdicated, became a monk, and retired to a monastery near Rome, subsequently founding on Mt Soracte the monastery of St Silvester.