The 340s decade ran from January 1, 340, to December 31, 349.
July 2 - Eastern Orthodox Church calendar - July 4
Zeno of Verona was either an early Christian Bishop of Verona or a martyr. He is a saint in the Roman Catholic Church and in the Eastern Orthodox Church.
Altinum was an ancient town of the Veneti 15 km SE of modern Treviso, close to the mainland shore of the Lagoon of Venice. It was also close to the mouths of the rivers Dese, Zero and Sile. A flourishing port and trading centre during the Roman period, it was destroyed by Attila the Hun in 452. The town recovered, but was later abandoned when sea-borne sand began to cover it over. Its inhabitants moved to Torcello and other islands of the northern part of the lagoon.
Saints Gervasius and Protasius are venerated as Christian martyrs, probably of the 2nd century. They are the patron saints of Milan and of haymakers and are invoked for the discovery of thieves. Their feast day in the Latin Rite of the Catholic Church is 19 June, the day marking the translation of their relics. In the Eastern Orthodox Church and in the Eastern Rites of the Catholic Church, their feast takes place on 14 October (O.S.)/24 October (N.S.), the traditional day of their death. In Christian iconography their emblems are the scourge, the club and the sword.
Alban of Mainz was a Catholic priest, missionary, and martyr in the Late Roman Empire. He is venerated as Saint Alban of Mainz in the Catholic Church, not to be confused with Saint Alban of Verulamium.
Nabor and Felix were Christian martyrs thought to have been killed during the Great Persecution under the Roman emperor Diocletian. A tomb in Milan is believed to contain their relics.
Saint Evasius is believed to have been a missionary and bishop of Asti, in north-west Italy. He was forced to flee to the great Padan forest known as the Selva Cornea, where he and numerous followers were beheaded by pagan, or alternatively by Arian, enemies in the area of what is now Casale Monferrato. He is venerated as a saint of the Roman Catholic Church and is the patron of a number of towns in Piedmont and Lombardy. His cult is liveliest at Casale, where his remains are conserved in the cathedral dedicated to him.
The Church of Santa Maria Assunta is a basilica church on the island of Torcello, Venice, northern Italy. It is a notable example of Venetian-Byzantine architecture, one of the most ancient religious edifices in the Veneto, and containing the earliest mosaics in the area of Venice.
Saint Severus was a bishop of Naples during the 4th and 5th centuries. He is considered the twelfth bishop of Naples, succeeding Maximus. His episcopate ran from February 363 to April 29, 409, the traditional date of his death. Maximus is actually considered the 10th bishop by the Catholic Church; between the episcopates of Maximus and Severus was the episcopate of Zosimus, who was Arian and thus considered heretical by the Catholic Church.
Saint Heliodorus was the first bishop of Altinum in the 4th century. He was born in Dalmatia. Like Chromatius, he was a disciple of Valerianus, the bishop of Aquileia.
Saint Theonistus is a saint venerated by the Catholic Church. Theonistus is venerated with two companions, Tabra and Tabratha. Medieval documents give accounts of his life, which are contradictory and confused.
Saint Theonestus of Vercelli is venerated as a martyr by the Catholic Church. Theonestus may have been a member of the early Christian community in Vercelli, living in an era earlier than that of Eusebius of Vercelli. Theonestus may have been a martyr, whose relics were buried in the cemetery where other Christians were buried, outside the city walls. It is believed that his whole body was conserved in the tomb dedicated to him. He is probably not the saint of the same name who was said to have been killed at Altinum by the Arians. This saint of Altinum, whose legend, in any case, is confused and contradictory, may have been confused for the martyr of Vercelli, whose historicity is more certain.
Eleutherius (or Eleut erus or Eleftherios; sometimes called Liberalis or Liberator, the former transliterations and the latter translations of his and his mother Antia are venerated as Christian saints and martyrs in Albania.
Saint Vigilius of Trent is venerated as the patron saint and first bishop of Trent. He should not be confused with the pope of the same name.
December 6 - Eastern Orthodox liturgical calendar - December 8
December 13 - Eastern Orthodox liturgical calendar - December 15
Justus of Lyon was the 13th Bishop of Lyon. He succeeded Vérissime 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. Around 350, Justus was made Bishop of Lyon. As bishop of the capital of Gaul, he was among the participants of the Council of Valencia of 374 regarding religious discipline of the clergy and the faithful. He later became a hermit.
The Chronicon Altinate, Altino Chronicle or Origo civitatum Italie seu Venetiarum is one of the oldest sources for the history of Venice. The oldest known manuscripts date to the 13th century, though its components are older. It has considerable overlap with the Chronicon Gradense, which may be one of its sources. It is sometimes called the Chronicon Venetum, but that title is also used for the Chronicon Venetum et Gradense of John the Deacon.
