Pope Pontian was the bishop of Rome from 21 July 230 to 28 September 235. In 235, during the persecution of Christians in the reign of the Emperor Maximinus Thrax, Pontian was arrested and sent to the island of Sardinia.
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.
Hippolytus of Rome was a Bishop of Rome and one of the most important second–third centuries Christian theologians, whose provenance, identity and corpus remain elusive to scholars and historians. Suggested communities include Rome, Palestine, Egypt, Anatolia and other regions of the Middle East. The best historians of literature in the ancient church, including Eusebius of Caesarea and Jerome, openly confess they cannot name where Hippolytus the biblical commentator and theologian served in leadership. They had read his works but did not possess evidence of his community. Photios I of Constantinople describes him in his Bibliotheca as a disciple of Irenaeus, who was said to be a disciple of Polycarp, and from the context of this passage it is supposed that he suggested that Hippolytus so styled himself. This assertion is doubtful. One older theory asserts he came into conflict with the popes of his time and seems to have headed a schismatic group as a rival to the bishop of Rome, thus becoming an antipope. In this view, he opposed the Roman Popes who softened the penitential system to accommodate the large number of new pagan converts. However, he was reconciled to the Church before he died as a martyr.
Saints Faith, Hope, and Charity , are a group of Christian martyred saints who are venerated together with their mother, Sophia ("Wisdom").
Abdon and Sennen, variously written in early calendars and martyrologies Abdo, Abdus, and Sennes, Sennis, Zennen, are recognized by the Catholic Church and Eastern Orthodox Church as Christian martyrs, with a feast day on 30 July. In some places they have been honoured on 20 March, and the first Sunday of May.
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.
August 12 - Eastern Orthodox liturgical calendar - August 14
Saints Simplicius, Faustinus and Beatrix were siblings martyred in Rome during the Diocletian persecution.
Saints Marius, Martha, Audifax, and Abachum were, according to their largely legendary passio of the 6th century, four saints of the same family. They came from Persia to Rome, and were martyred in 270 for sympathizing with Christian martyrs and burying their bodies. Some ancient martyrologies place the date of their death between 268 and 270, during the reign of Claudius II, although there was no persecution of Christians during this time.
Emerentiana was a Roman virgin and martyr, who lived around the start of the 4th century. Her feast day is 23 January.
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.
John and Paul are saints who lived during the fourth century in the Roman Empire. They were martyred at Rome on 26 June. The year of their martyrdom is uncertain according to their Acts; it occurred under Julian the Apostate (361–363).
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.
Benignus of Dijon was a martyr honored as the patron saint and first herald of Christianity of Dijon, Burgundy. His feast falls, with All Saints, on November 1; his name stands under this date in the Martyrology of St. Jerome.
Nicomedes was a martyr of unknown era, whose feast is observed 15 September. He was buried in a catacomb on the Via Nomentana near the gate of that name.
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.
Rufina and Secunda were Roman virgin-martyrs and Christian saints. Their feast day is celebrated on 10 July.
Rictius Varus was a Vicarius in Roman Gaul at the end of the 3rd century, around the time of the Diocletianic Persecution. The Roman Martyrology contains many references to the prefect Rixius Varus, who is said to have persecuted hundreds of Christians. In Christian hagiography he later repented and became a Christian martyr himself, and is regarded a Saint in the Eastern Orthodox and Roman Catholic Churches, with his feast day on July 6.
Andeolus or Andéol is an alleged Christian missionary martyred in Gaul.
August 21 - Eastern Orthodox liturgical calendar - August 23
