Antipope Felix II, an archdeacon of Rome, was installed as Pope in 355 after the Emperor Constantius II banished the reigning Pope, Liberius, for refusing to subscribe to a sentence of condemnation against Saint Athanasius.
Pope Stephen I was the Bishop of Rome from 12 May 254 to his death on 2 August 257. He was later canonized as a saint and some accounts say he was killed while celebrating Mass.
Pope Felix I was the bishop of Rome from 5 January 269 to his death on 30 December 274. Born in Rome, he succeeded Pope Dionysius and is noted for his theological contributions, particularly a significant dogmatic letter addressing the unity of Christ’s person. During his papacy, Felix I confronted the heresy of Paul of Samosata, who denied the divinity of Christ. The intervention of Emperor Aurelian, prompted by Felix, led to Paul’s deposition from the bishopric of Antioch, reinforcing orthodox Christological doctrine.
Pope Soter was the bishop of Rome from c. 167 to his death in c. 174. According to the Annuario Pontificio, the dates may have ranged from 162–168 to 170–177. He was born in Fondi, Campania, today in the Lazio region of Italy. Soter is known for declaring that marriage was valid only as a sacrament blessed by a priest and also for formally inaugurating Easter as an annual festival in Rome. His name, from Greek Σωτήριος from σωτήρ "saviour", would be his baptismal name, as his lifetime predates the tradition of adopting papal names.
Pope Anacletus, also known as Cletus, was the bishop of Rome, following Peter and Linus. Anacletus served between c. AD 80 and his death, c. AD 92. Cletus was a Roman who, during his tenure as pope, ordained a number of priests and is traditionally credited with setting up about twenty-five parishes in Rome. Although the precise dates of his pontificate are uncertain, he "...died a martyr, perhaps about 91". Cletus is mentioned in the Roman Canon of the mass; his feast day is April 26.
Pope Zephyrinus was the bishop of Rome from the year 199 until his death on 20 December 217. He was born in Rome, and succeeded Victor I. Upon his death on 20 December 217, he was succeeded by his principal advisor, Callixtus I. He is known for combating heresies and defending the divinity of Christ.
Pope Marcellinus was the bishop of Rome from 30 June 296 to his death in 304. A historical accusation was levelled at him by some sources to the effect that he might have renounced Christianity during Emperor Diocletian's persecution of Christians before repenting afterwards, which would explain why he is omitted from lists of martyrs. The accusation is rejected, among others, by Augustine of Hippo. He is today venerated as a saint in the Catholic Church and in the Serbian Orthodox Church.
Cyriacus, sometimes Anglicized as Cyriac, according to Christian tradition, is a Christian martyr who was killed in the Diocletianic Persecution. He is one of twenty-seven saints, most of them martyrs, who bear this name, of whom only seven are honoured by a specific mention of their names in the Roman Martyrology.
Apollinaris of Ravenna is a Syrian saint, whom the Roman Martyrology describes as "a bishop who, according to tradition, while spreading among the nations the unsearchable riches of Christ, led his flock as a good shepherd and honoured the Church of Classis near Ravenna by a glorious martyrdom."
Saints Simplicius, Faustinus and Beatrix were siblings martyred in Rome during the Diocletian persecution.
Gorgonius or Gorgon was a Christian who was martyred in AD 304 alongside Peter Cubicularius and a certain Dorotheus at Nicomedia during the Diocletianic Persecution.
Jovita and Faustinus were said to be Christian martyrs under Hadrian. Their traditional date of death is 120. They are patron saints of Brescia. Faustinus is the patron saint of Pietradefusi.
Saint Tryphon of Campsada was a 3rd-century Christian saint. He is venerated by the Roman Catholic and Eastern Orthodox churches as a great martyr and holy unmercenary.
Martinian and Processus were Christian martyrs of ancient Rome. Neither the years they lived nor the circumstances of their deaths are known. They are currently buried in St. Peter's Basilica in Rome.
Tiburtius, according to Christian legend, was a Christian martyr and saint. His feast day is 11 August which is the same as Saint Susanna. The two were not related, but are sometimes associated because they are venerated on the same day.
Felicitas of Rome, also anglicized as Felicity, is a saint numbered among the Christian martyrs. Apart from her name, the only thing known for certain about this martyr is that she was buried in the Cemetery of Maximus, on the Via Salaria on a 23 November. However, a legend presents her as the mother of the seven martyrs whose feast is celebrated on 10 July. The Eastern Orthodox Church celebrates their martyrdom on 25 January.
Saint Hermes, born in Greece, died in Rome as a martyr in 120, is venerated as a saint by the Catholic Church and the Eastern Orthodox Church. His name appears in the Martyrologium Hieronymianum as well as entries in the Depositio Martyrum (354). There was a large basilica over his tomb that was built around 600 by Pope Pelagius I and restored by Pope Adrian I. The Catacomb of Sant'Ermete on the Salarian Way is named after him.
Marcellus and Apuleius were third- or fourth-century martyrs who were inserted in the General Roman Calendar in the 13th century. They were recognized as saints by the Catholic Church, with 7 October as their feast day. Apuleius is considered purely legendary, and is no longer recognized.
Felicissimus and Agapitus were two of the six deacons of Pope Sixtus II who were martyred with him on or about 6 August 258, Felicissimus and Agapitus on the same day as the Pope. The seventh deacon, Lawrence of Rome, was martyred on 10 August of the same year.
Saint Boniface of Tarsus was, according to legend, executed for being a Christian in the year 307 at Tarsus, where he had gone from Rome in order to bring back to his mistress Aglaida relics of the martyrs.
