Apse, by Giovanni Mannozi, 1630, 17th Century. Italy, Lazio, Rome, Santi Quattro Coronati Basilica. All fresco frescos frescoes apse story The Four Crowned Saints Martyrs clouds soldiers Severus, Severian Severianus, Carpophorus Carpoforus and Vittorinus Victorinus Victorius martyrized because they are thought to have refused to worship, carve, the statue of Aesculapius airy view light angels yellow light blue sky blue gray red green black.