This happened in the 4th century long after all the "main" character were 400 years dead. So u can see that this is all very dubious and why there is no proof of ever any of them existed.
The spread of Xianity was facilitated by some roman emperor:
Systematic Roman persecution of Christians stopped for a time in 313 when Emperor Constantine the Great proclaimed the Edict of Milan. Systematic persecutions under Roman Paganism did however resurface later, though temporarily, under Emperor Julian the Apostate. In addition to legalization, the emperors took an active role in calling the Ecumenical Councils to resolve disputes and establish church dogma on which the entire church would agree, those who disagreed would be labeled heretics and considered outside the church, starting with the Arians. These councils are seen as a continuation of the church council tradition that predated legalization (see Synod and Council of Jerusalem).
The Emperor Constantine I was exposed to Christianity by his mother, Helena. There is scholarly controversy, however, as to whether Constantine adopted his mother's humble Christianity in his youth, or whether he adopted it gradually over the course of his life[1]. After the Roman-Jewish Wars (66–135), the significance of Jerusalem to Christians entered a period of decline, Jerusalem having been temporarily converted to the pagan Aelia Capitolina, but interest resumed again with the pilgrimage of Helena to the Holy Land c. 326–28. Helena is remembered as the Patron Saint of Archaeologists and (according to the church historian Socrates of Constantinople[2]) claimed to have found the Cross of Christ, after removing a Temple to Venus that had been built over the site.
Christian sources record that Constantine experienced a dramatic event in 312 at the Battle of Milvian Bridge, after which Constantine would claim the emperorship in the West. According to these sources, Constantine looked up to the sun before the battle and saw a cross of light above it, and with it the Greek words "ΕΝ ΤΟΥΤΩ ΝΙΚΑ" ("by this, conquer!", often rendered in the Latin "in hoc signo vinces"); Constantine commanded his troops to adorn their shields with a Christian symbol (the Chi-Ro), and thereafter they were victorious - all superstition to me!
