Stock Photo: Martyrdom of Saint Casimir and of Oliva Monks in Poland, by Della Rovere Giovanni Mauro known as Fiammenghino, Della Rovere Giovan Battista known as Fiammenghino, 17th Century, fresco. Italy, Lombardy, Milan, Chiaravalle Abbey. Detail. Monk thrown down from a balcony Martyrdom of Saint Casimir and of Monks of Oliva Monastery in Poland arch channeled antas balustrade cartouche: scroll inscription soldiers murderers: executioners cuirass: armor h.