https://www.youtube.com/watch?v=hS2MEpqBWrM
http://www.livius.org/sources/content/zosimus/zosimus-new-history-2/
Death 22 May 337
Battle of the Milvian Bridge took place between the Roman Emperors Constantine I and Maxentius on 28 October 312
Pope Julius I (died 12 April 352) was Pope of the Catholic Church from 6 February 337 to his death in 352.
Pope Sylvester I (also Silvester, died 31 December 335), was Pope of the Catholic Church from 314 to his death in 335
Pope Mark (Latin: Marcus; died 7 October 336) was Pope of the Catholic Church from 18 January to 7 October 336
Hagia sophia
Writing in 440, Socrates of Constantinople claimed that the church was built by Constantius II, who was working on it in 346.[15] A tradition which is not older than the 7th or 8th century, reports that the edifice was built by Constantine the Great.[15] Zonaras reconciles the two opinions, writing that Constantius had repaired the edifice consecrated by Eusebius of Nicomedia, after it had collapsed.[15] Since Eusebius was bishop of Constantinople from 339 to 341, and Constantine died in 337, it seems possible that the first church was erected by the latter.[15] The edifice was built as a traditional Latin colonnaded basilica with galleries and a wooden roof. It was preceded by an atrium. It was claimed to be one of the world's most outstanding monuments at the time.
The Patriarch of Constantinople John Chrysostom came into a conflict with Empress Aelia Eudoxia, wife of the emperor Arcadius, and was sent into exile on 20 June 404. During the subsequent riots, this first church was largely burned down.[15] Nothing remains of the first church today.
The Edict of Milan was a letter signed by the Roman emperors Constantine and Licinius, that proclaimed religious toleration in the Roman Empire. The letter was issued in February, 313 AD, shortly after the emperor Diocletian and stopped the unfair treatment of Christians.
Athanasius of Alexandria (/ˌæθəˈneɪʃəs/; Greek: Ἀθανάσιος ἈλεξανδρείαςAthanásios Alexandrías; Coptic: ⲡⲓⲁⲅⲓⲟⲥ ⲁⲑⲁⲛⲁⲥⲓⲟⲩ ⲡⲓⲁⲡⲟⲥⲧⲟⲗⲓⲕⲟⲥ or Ⲡⲁⲡⲁ ⲁⲑⲁⲛⲁⲥⲓⲟⲩ ⲁ̅;[2] c. 296–298 – 2 May 373), Western portion of the Empire, under the influence of the Popes in Rome, favored Catholicism over Arianism, and through their intercession they convinced Constantine to free Athanasius, allowing him to return to Alexandria.[8] This action aggravated Constantius II, who was a committed supporter of Arianism.
http://www.sgg.org/wp-content/uploads/2014/03/140321.mp3
Athanasius, as the chief representative of Nicene Christianity, removed from Christology every trace of Judaism and gave to it a Hellenic cast; so that, curiously enough, at the very time that the Greek world was surrendering its earthly dominion to Christianity, Hellenism was asserting itself spiritually.
Eusebius, the bishop of Caesarea was a 4th-century pioneer work giving a chronological account of the development of Early Christianity from the 1st century to the 4th century. It was written in Koine Greek, and survives also in Latin, Syriac and Armenian manuscripts.[1]
https://www.youtube.com/watch?v=xR09kxJWoTY&list=PL61206A1D5F9190D3
https://en.wikipedia.org/wiki/Life_of_Constantine