Antipope Felix II, an archdeacon of Rome, was installed as Pope in 355 AD after the Emperor Constantius II banished the reigning Pope, Liberius, for refusing to subscribe to a sentence of condemnation against Saint Athanasius.
Pope Alexander I was the bishop of Rome from about 108/109 to 116/119. Some believe he suffered martyrdom under the Roman emperor Trajan or Hadrian.
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.
Pope Lucius I was the bishop of Rome from 25 June 253 to his death on 5 March 254. He was banished soon after his consecration, but gained permission to return. He was mistakenly classified as a martyr in the persecution by Emperor Valerian, which did not begin until after Lucius' death.
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.
Saint Valentine was a 3rd-century Roman saint, commemorated in Western Christianity on February 14 and in Eastern Orthodoxy on July 6. From the High Middle Ages, his feast day has been associated with a tradition of courtly love. He is also a patron saint of Terni, epilepsy and beekeepers. Saint Valentine was a clergyman – either a priest or a bishop – in the Roman Empire who ministered to persecuted Christians. He was martyred and his body buried on the Via Flaminia on February 14, which has been observed as the Feast of Saint Valentine since at least the eighth century.
Ursula was a Romano-British virgin and martyr possibly of royal origin. She is venerated as a saint in the Roman Catholic Church, Eastern Orthodox Church and the Anglican Communion. Her feast day in the pre-1970 General Roman Calendar and in some regional calendars of the ordinary form of the Roman Rite is 21 October.
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.
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.
Saint Gabinus is the title given to two personages.
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.
Susanna of Rome was a Christian martyr of the Diocletianic Persecution. Her existing hagiography, written between about 450 and 500 AD, is of no historical value and the relations it attributes to Susanna are entirely fictitious. It is probable that a real martyr named Susanna lies behind the literary invention.
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.
Basilides, Cyrinus, Nabor and Nazarius are saints of the Catholic Church, mentioned in the Martyrology of Bede and earlier editions of the Roman Martyrology for 12 June as four Roman martyrs who suffered death under Diocletian.
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.
Agapitus is venerated as a martyr saint, who died on August 18, perhaps in 274, a date that the latest editions of the Roman Martyrology say is uncertain.
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.
