Peter, Dorotheus and Gorgonius

The Holy Martyrs Peter, Dorotheus and Gorgonius were servants of the chamber of the emperor Diocletian and were killed at Nicomedia for their faith in the fourth century. According to their passio, they were Diocletian's cubicularii and were subjected to various tortures and finally put to death for protesting against the persecution of Christians launched by the emperor. Their story was quite popular and is also handed down by Jacobus de Voragine in the Golden Legend (chapter 135).

In the Roman Martyrology, Caesar Baronius placed the commemoration of Saint Peter on 12 March; Gorgonius was confused with the Roman martyr of the same name, buried in the cemetery ad Duas Lauros on the Via Labicana, and his commemoration, together with that of Dorotheus, was put on 9 September. In the new Roman Martyrology, reformed after the Second Vatican Council and promulgated by Pope John Paul II, the commemoration of the three martyrs is read on 12 March (new style).