Nazarius and Celsus were two martyrs of whom little is known beyond the discovery of their bodies by Ambrose of Milan.
Giovanni Antonio Merli, Saint Nazarius on a horse, 1480. St. Nazarius and Celsus Abbey, San Nazzaro Sesia.
Nazarus and Celsus (standing figures), by Titian. The kneeling figure is a donor named Altobello Averoldi.
Gervasius and Protasius are venerated as Christian martyrs, probably of the 2nd century. They are the patron saints of Milan and of haymakers and are invoked for the discovery of thieves. Their feast day in the Latin Rite of the Catholic Church is 19 June, the day marking the translation of their relics. In the Eastern Orthodox Church and in the Eastern Rites of the Catholic Church, their feast takes place on 14 October (O.S.)/24 October (N.S.), the traditional day of their death. In Christian iconography their emblems are the scourge, the club and the sword.
"The martyrdom of Saints Gervase and Protase," from a 14th-century manuscript.
Gervasius and Protasius, by Philippe de Champaigne
The crypt in Sant'Ambrogio basilica. Embossed silver urn, displaying the skeletons of Saints Ambrose, Gervase, and Protase.
Martyr Gervasius. Mosaic in the Basilica of San Vitale, Ravenna
