In the fourth century a Greek religious romance on the Loves of Cecilia and Valerian was written in glorification of virginal life with the purpose of taking the place of then-popular sensual romances.
Consequently, until better evidence is produced, we must conclude that St. Cecilia was not known or venerated in Rome until about the time when Pope Gelasius (496) introduced her name into his Sacramentary.
It is said that there was a church dedicated to St. Cecilia in Rome in the fifth century, … Excellent content provided by https://www.catholic.org/.