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356–417 · Early Church

John II (Greek: Ἰωάννης Β΄; c. 356 – 10 January 417) was bishop of Jerusalem from AD 387 to AD 417. John II succeeded to the episcopal throne of Jerusalem on the death of Cyril in 386 (or 387).

100–100 · Early Church

John Mark (Greek: Ἰωάννης Μᾶρκος, romanized: Iōannēs Markos) is named in the Acts of the Apostles as an assistant accompanying Paul and Barnabas on their missionary journeys.

303 · Early Church

John of Alexandria (fl. 600–642) was a Byzantine medical writer who lived in Alexandria, in present-day Egypt. He is thought to be the author of a commentary on Galen's De sectis, a Latin version of which survives in several manuscripts.

400 · Early Church

John the Warrior (Greek: Ἰωάννης ὁ στρατιώτης, Russian: Иоанн Воин, Ioann Voin) or John the Soldier in the Catholic Church is a Christian saint and martyr. He was born in the 4th century and lived until his death in the Byzantine Empire.

122 · Early Church

Jovita and Faustinus were said to be Christian martyrs under Hadrian, traditionally held to have died in 120 AD. Together, they are patron saints of the Italian city of Brescia. Faustinus is the patron saint of Pietradefusi.

350–363 · Early Church

Judas Cyriacus (Cyriacus of Ancona, Cyriacus of Jerusalem, Quiriacus, Quiricus, Kyriakos); Spanish: Quirico, Italian: Ciriaco), d. ca. AD 360, is the patron saint of Ancona, Italy. His feast day is celebrated in the Catholic Church on 4 May.

420–450 · Early Church

Julia of Corsica (Italian: Giulia di Corsica; French: Julie; Corsican: Ghjulia; Latin: Iulia), also known as Julia of Carthage, and more rarely Julia of Nonza, was a virgin and martyr who is venerated as a saint. Her death occurred most probably in AD 439 or thereafter.

300–304 · Early Church

Julia is the name known for the martyr from Augusta Emerita who suffered martyrdom alongside her companion Saint Eulalia in the ancient city of Augusta Emerita, modern-day Mérida, on December 10, 304.

231–249 · Early Church

Julian of Antioch (Latin: Julianus, Greek: Ίουλιανός; d. AD 305 x 311), variously distinguished as Julian the Martyr, Julian of Tarsus, Julian of Cilicia, and Julian of Anazarbus, was a 4th-century Christian martyr and saint.

300–284 · Early Church

Julian of Emesa (Greek: Ἰουλιανός ὁ ἐν Ἐμέσῃ; Latin: Julianus Emesenus) or Elian al-Homsi (Arabic: إليان الحمصي), also spelt Elyan or Ilyan, was a third-century Christian from Emesa (modern Homs, in Syria) who reputedly practiced as a physician or healer.

300–400 · Early Church

Saint Julian of Le Mans (French: Saint Julien du Mans; Latin: Iulianus; 3rd century; perhaps 4th century) is a saint venerated in both the Roman Catholic and Orthodox Church, honoured as the first bishop of Le Mans. His feast day is 27 January.

150–150 · Early Church

Saint Julian of Sora was a martyr of Sora, Lazio, Italy. A Dalmatian by birth, he was tortured and subsequently beheaded by Roman soldiers in Sora on his way to Campania during the reign of Emperor Antoninus Pius.

360–435 · Early Church

Juliana (died 435) was a saint and righteous woman from Bologna. Her feast day is February 7. Saint Juliana, a mother of four, was under the spiritual guidance of Saint Ambrose of Milan. Deciding to become a priest, her husband asked to be released from their marriage vows.

285–305 · Early Church

Juliana of Nicomedia (Greek: Ίουλιανή Νικομηδείας) is an Anatolian Christian saint, said to have suffered martyrdom during the Diocletianic persecution in 304. She was popular as a patron saint of the sick during the Middle Ages, especially in the Netherlands.

100 · Early Church

Julianus was a priest and a citizen of Ancient Rome. He died in Terracina in the year 100 and is recognized as a saint.

270 · Early Church

Julie of Troyes (died between 270 and 275) was a virgin who, along with her companions Claude (or Claudian), Justus, Jucundian, and five other martyrs, suffered under Aurelian at Troyes in Champagne; they are commemorated on July 21.

250–304 · Early Church

Cyricus and his mother Julitta are venerated as early Christian martyrs. According to traditional stories, they were put to death at Tarsus in AD 304. Some evidence exists for an otherwise unknown child-martyr named Cyricus at Antioch.

352 · Early Church

Pope Julius I was the bishop of Rome from 6 February 337 to his death on 12 April 352. He was appealed to by Athanasius when the latter was deposed from his position as patriarch by Arian bishops, Julius then supported Athanasius and condemned his deposition as unjust.

300 · Early Church

Julius of Caerleon was an English martyr. He was murdered in 303 or 304 in Quadra Legionum (modern-day Caerleon) alongside Aaron of Caerleon during the Diocletianic Persecution. The source for his martyrdom is De Excidio et Conquestu Britanniae by Gildas.

330–390 · Early Church

Julius of Novara (Italian: Giulio di Orta), also Julius of Aegina (died 401 AD) was a missionary priest to northern Italy. His cult is centred at Lake Orta in the Novarese highlands, and in particular on the island which has been named for him since at least the eighth century,…

301–390 · Early Church

Justus of Lyon (Latin: Iustus, lit. '"one who helps"') was the 13th Bishop of Lyon. He succeeded Verissimus in the mid-4th century. He is venerated as a saint by both the Catholic and the Orthodox Church, with a feast day on 2 September.

268–287 · Early Church

Saints Justa and Rufina (Ruffina) (Spanish: Santa Justa y Santa Rufina) are venerated as martyrs. They are said to have been martyred at Hispalis (Seville) during the 3rd century. Only St.

401 · Early Church

Saint Justin of Chieti (Italian: San Giustino di Chieti) is venerated as an early bishop of Chieti, Italy. His date of death varies, and is sometimes given as the 3rd, 4th, or 6th centuries. Historical evidence for Justin's existence from before the 15th century does not exist.

201–310 · Early Church

Saint Justin of Siponto, as well as Saints Florentius, Felix, and Justa, are venerated as Christian martyrs by the Catholic Church. Information about them is fragmentary but their names were inserted into various martyrologies.

64 · Early Church

Justina is an anglicised version of the Latin name Iustina, feminine of Iustinus, a derivative of Iustus, meaning fair or just. For the masculine version of the name, see Justin.

304 · Early Church

Saints Cyprian and Justina (Greek: Κυπριανός & Ίουστίνη) are honored in the Catholic Church, Eastern Orthodox Church and Oriental Orthodoxy as Christians of Antioch, who in 304, during the Diocletianic Persecution, suffered martyrdom at Nicomedia (modern-day İzmit, Turkey) on Sep…

300–304 · Early Church

Justina of Padua (Italian: Santa Giustina di Padova; Venetian: Santa Justina de Pàdoa) is a Christian saint and a patroness of the city of Padua. Her feast day is October 7. She was devoted to religion from her earliest years and took the vow of perpetual virginity.

1–111 · Early Church

Justinus of Siponto was a Catholic priest and Bishop of Siponto who held citizenship in Ancient Rome. Born in Siponto in 1, he died in the same city in 111. He is recognized as a saint by the Catholic Church.

277–287 · Early Church

Justus of Beauvais (c. 278 – c. 287) is a semi-legendary saint of the Roman Catholic Church. He may have been a Gallo-Roman martyr, but his legend was confused with that of other saints, such as Justin of Paris.

300–303 · Early Church

Saint Justus of Trieste (also Justus the Martyr, Just of Trieste; Italian: San Giusto di Trieste, San Giusto martire; died on 2 November 293) is a saint venerated in the Eastern Orthodox Church and Roman Catholic Church.

350–458 · Early Church

Saint Juvenal (Greek: Άγιος Ιουβενάλιος) was Bishop of Jerusalem from 422. On the See of Jerusalem being recognised as a Metropolitinate by the Council of Chalcedon, he became the first Metropolitan of Jerusalem, an office he occupied until his death in 458.

340–376 · Early Church

Saint Juvenal (d. May 3, 369 or 377) (Italian: San Giovenale di Narni) is venerated as the first Bishop of Narni in Umbria. Historical details regarding Juvenal's life are limited.

363 · Early Church

Saints Juventinus (or Juventius) and Maximinus (died 29 January 363) were Christian martyrs and members of the imperial guard of Emperor Julian. Their feast day is 25 January.

300–400 · Early Church

Saint Juventius (died 8 February 397), sometimes spelled Eventius, Iventius, or Inventius, was a bishop of Pavia during the 4th century, holding the position for 39 years.

489 · Early Church

St. Cianán, or Kenan, (died 24 November 489) was a Bishop of Duleek in Ireland. He was descended from the royal blood of the kings of Munster. His feast day is 24 November. Cianán was a pupil of the monk Nathan.

425 · Early Church

Keyne was a 5th-century holy woman and hermitess who was said to have travelled widely through what is now South Wales and Cornwall. Numerous dedications to Saint Keyne exist in areas as diverse as South Wales, Anglesey, Somerset, Hertfordshire, and Cornwall.

300–400 · Early Church

Khosrovidukht also transliterated Xosroviduxt (flourished second half of 3rd century & first half of 4th century) was a princess of the Arsacid dynasty of Armenia, one of the client-kingdoms of the Roman Empire and a branch of the Arsacid dynasty of Parthia.

250–289 · Early Church

Saint Kyriaki (Greek: Αγία Κυριακή, Macedonian: Света Недела), also known as Saint Kyriaki the Great Martyr (Greek: Αγία Κυριακή η Μεγαλομάρτυς, Macedonian: Света великомаченичка Недела), is a Christian saint who was martyred under the Roman emperor Diocletian.

300–306 · Early Church

Kyrillos I was a Syrian Catholic priest and bishop born in 300. He died in Pannonia in 306 and is venerated as a saint in the Catholic Church.

300–375 · Early Church

Larissa is the capital and largest city of the Thessaly region in Greece. It is the fifth-most populous city in Greece with a population of 148,562 in the city proper, according to the 2021 census. It is also the capital of the Larissa regional unit.

201–312 · Early Church

Laverius, often called Laviero or Laviere by metathesis (Teggiano, Acerenza, or Ripacandida, 3rd century – Grumentum, November 17, 312), was a Roman soldier who was martyred for his Christian faith and is venerated as a saint by the Catholic Church.

350–449 · Early Church

Lazarus (Italian: Lazzaro) was Archbishop of Milan from 438 to 449 AD. He is honoured as a saint in the Catholic Church and his feast day is 11 February. Not much has been discovered about the life and episcopate of Lazarus.

400–441 · Early Church

Saint Lazarus of Aix (French: Lazare d'Aix) (d. 441) was the first verifiable bishop of Aix-en-Provence, in France. He was appointed to his bishopric by the usurper emperor Constantine III in 408, and stripped of his office after Constantine was deposed by the future Constantius…

400–461 · Early Church

Pope Leo I (Italian: Leone I) (c. 391 – 10 November 461), also known as Leo the Great (Latin: Leo Magnus; Italian: Leone Magno), was Bishop of Rome from 29 September 440 until his death on 10 November 461.

275–366 · Early Church

Saint Leo of Montefeltro (c. 275–366) otherwise Leone of Montefeltro (Italian: San Leo di Montefeltro, San Leone di Montefeltro) was the first bishop of Montefeltro from 301. He is traditionally held to have been in origin a stonecutter from Dalmatia.

300–304 · Early Church

Saint Leocadia (French: Sainte Léocadie; Spanish: Santa Leocadia) is a Spanish saint. She is thought to have suffered martyrdom and died on December 9, ca. 304, in the Diocletianic Persecution. The feast day for St.

101–202 · Early Church

Leonides of Alexandria (Greek: Λεωνίδης) was a Greek early Christian martyr who lived in the second and early third centuries AD. According to the Christian historian Eusebius, Leonides' son was the early Church father Origen.

250–337 · Early Church

Leontius of Caesarea (died 337) was a bishop of Caesarea Mazaca, in Cappadocia. He was childhood friends with Gregory the Illuminator, later in life Leontius would consecrate Gregory to become the patriarch of the Armenians. Leontius attended the First Council of Nicaea in 325.

432 · Early Church

Leontius of Fréjus (French: Léonce de Fréjus) (c. 395-443) was a bishop of Fréjus, in Provence. He was likely born in the city later to be called Nîmes, towards the end of the fourth century; he died in his episcopal town in 443, according to some authorities.

99 · Early Church

Saint Leontius of Tripoli died in the year 99 in Tripoli. He is recognized as a saint.