The Four Crowned Martyrs or Four Holy Crowned Ones (Latin, Sancti Quatuor Coronati) were nine individuals who are venerated as martyrs and saints of Early Christianity. The nine saints are divided into two groups: Severus (or Secundius), Severian(us), Carpophorus (Carpoforus), Victorinus (Victorius, Vittorinus) Claudius, Castorius, Symphorian (Simpronian), Nicostratus, and Simplicius'According to the Golden Legend, the names of the members of the first group were not known at the time of their death "but were learned through the Lord’s revelation after many years had passed." They were called the "Four Crowned Martyrs" because their names were unknown ("crown" referring to the crown of martyrdom). First group Severus (or Secundius), Severian(us), Carpophorus, and Victorinus were martyred at Rome or Castra Albana, according to Christian tradition. According to the Passion of Saint Sebastian, the four saints were soldiers (specifically cornicularii, or clerks, in charge of all the regiment's records and paperwork) who refused to sacrifice to Aesculapius, and therefore were killed by order of Emperor Diocletian (284–305), two years after the death of the five sculptors, mentioned below. The bodies of the martyrs were buried in the cemetery of Santi Marcellino e Pietro on the fourth mile of the Via Labicana by Pope Miltiades and Saint Sebastian (whose skull is preserved in the church). Second group The second group, according to Christian tradition, were sculptors from Sirmium who were killed in Pannonia. They refused to fashion a pagan statue for the Emperor Diocletian or to offer sacrifice to the Roman gods. The Emperor ordered them to be placed alive in lead coffins and thrown into the Sava River in about 287. Simplicius was killed with them. According to the Catholic Encyclopedia, [T]he Acts of these martyrs, written by a revenue officer named Porphyrius probably in the fourth century, relates of the five sculptors that, although they raised no objections to executing such profane images as Victoria, Cupid, and the Chariot of the Sun, they refused to make a statue of Æsculapius for a heathen temple. For this they were condemned to death as Christians. They were put into leaden caskets and drowned in the River Save. This happened towards the end of 305. The references in the text of the martyrs' passio to porphyry quarrying and masonry located at the 'porphyritic mountain' indicate that the story's setting is misplaced; there are no porphyry quarries in Pannonia and the only porphyry quarry worked in