Saint Cecilia

Edward Burne-Jones, Saint Cecilia, c. 1900, stained and painted glass, 213.5 x 75.5 cm, Princeton University Art Museum, Princeton

Cecilia was a young Christian who took a vow of virginity, and was protected from her pagan husband by an angel on her wedding night.  He saw the angel and converted but was later martyred.  Cecilia herself was also martyred for refusing to sacrifice to the gods.

She is typically portrayed with an organ (as can be seen here), though sometimes she carries other instruments or sheets of music.  She can also wear a crown of lilies (which she was given when her husban converted), and carries the palm branch of martyrdom.