The Roman Catholic Church celebrates the feast day of Saint Constantius of Perugia. Constantius may have been the first Bishop of Perugia, there are various legends of his life, but in the most widely believed he was arrested and tortured on at least two occasions, and finally murdered by beheading in the town of Foligno, where some of my wife's relatives live to this day. Not that I'm saying my in laws are generally involved in the persecution of Catholics.
Tha painting is Virgin Mary and the Saints by Pietro Perugino, painted in 1497. The saints l-r are Louis of Toulouse, Lawrence, Herculanus of Brescia, and Constantius of Perugia.