Saint Cecilia was born into a rich, noble Roman family. As a child she took a vow of virginity to God.
In order to insight the help of saints, angels, etc. to keep her promise she fasted, prayed, and wore a sackcloth. After being unwillingly betrothed to pagan Valerian she sung to God at her wedding and refused to consummate her marriage. An angel protected her in these moments and that night Valerian would wish to see the angel. Cecilia told him to be baptized than he would be able to see said angel. He did so, saw the angel, was fully converted, and would later reach saintdom after being martyred by the prefect for burying other martyred Christians. Saint Cecilia herself was martyred by the same prefect Almachius after he was angered at her distribution of possessions to the poor.