The Mystical Marriage of Saint Francis of Assisi (1437–1444) by Stefano di Giovanni - Public Domain Catholic Painting
The painting was originally part of a polyptych at Sansepolcro, where it was seen by Piero della Francesca. It portrays St. Francis of Assisi while ideally marrying the three Theological Virtues, Faith, Hope and Charity, through the donation of a ring to them.