Saint Cecilia is a historical person who has become a fictional character.
It is said that she became the patroness of musicians after singing heartily to God at her wedding because she didn’t want to get married.
In Rome, the church of Santa Cecilia in Trastevere is supposedly built on the site of Cecilia’s house. Her body was reinterred there. During a renovation in 1599, it was found incorrupt (undecayed) as if she was asleep.
Musicians have written many songs to Saint Cecilia. Her feast is a popular day for music festivals.
In a way, Saint Cecilia is the saint of divine inspiration.