Saint Nino (Georgian: წმინდა ნინო (ts'minda nino), Greek: Αγία Νίνω), (sometimes St.

Nina or St. Ninny) Equal to the Apostles and the Enlightener of Georgia, (c. 296 – c. 338 or 340) was a woman who preached and introduced Christianity in Georgia.
According to most widely traditional accounts, she was from Kolastra, Cappadocia (Greek: Καππαδοκία), was a relative of Saint George, and came to Georgia (ancient Iberia) from Constantinople. Other sources claim she was from Rome, Jerusalem or Gaul (modern France).
According to the legend, Nino received a vision where the Virgin Mary gave her a grapevine cross and said: "Go to Iberia and tell there the Good Tidings of the Gospel of Jesus Christ, and you will find favour before the Lord; and I will be for you a shield against all visible and invisible enemies. By the strength of this cross, you will erect in that land the saving banner of faith in My beloved Son and Lord." While on her way to Iberia, passing through Anatolia into Caucasus, Nino managed to convert some villages to Christianity in Northern Anatolia and Armenia.
Nino reached the borders of ancient Georgian Kingdom of Iberia in about 320 A.D. There, she placed a Christian cross in the small town of Akhalkalaki and started preaching the Christian faith in Urbnis and finally reaching Mtskheta (the capital of Iberia). Iberian Kingdom has been influenced by the neighbouring Persian Empire which played an important role as the regional power in the Caucasus. The Iberian King Mirian III and his nation worshiped the syncretic gods of Armazi and Zaden. Soon after the arrival of Nino in Mstkheta, the Queen of Iberia Nana (daughter of King Asphagor) requested the audience with the Cappadician.
Queen Nana, who suffered from a severe illness, had some knowledge of Christianity but had not yet converted to it. Nino, restoring the Queen's health, won to herself disciples from the Queen's attendants, including a Jewish priest and his daughter, Abiathar and Sidonia. Queen Nana also officially converted to Christianity and was baptized by Nino herself. King Mirian, aware of his wife’s religious conversion, was intolerant of her new faith, persecuting it and threatening to divorce his wife if she didn't leave the faith. He secluded himself, however, from Nino and the growing Christian community in his kingdom. His isolation to Christianity did not last long because, according to the legend, while on a hunting trip, he was suddenly struck blind as total darkness emerged in the woods. In a desperate state, King Mirian uttered a prayer to the God of St Nino:
If indeed that Christ whom the Captive had preached to his Wife was God, then let Him now deliver him from this darkness, that he too might forsake all other gods to worship Him. As soon as he finished his prayer, the light appeared and the King hastily returned to his palace in Mtskheta. As a result of this miracle, the King of Iberia renounced idolatry under the teaching of St Nino and was baptized as the first Christian King of Iberia. Soon, the whole of his household and the inhabitants of Mtskheta adopted Christianity. In A.D. 327 King Mirian made Christianity the state religion of his kingdom, making Iberia the second Christian state after Armenia.
After adopting Christianity, Mirian sent an ambassador to Byzantium, asking Emperor Constantine I to have a bishop and priests sent to Iberia. Constantine, having learned of Iberia’s conversion to Christianity, granted Mirian the church lands in Jerusalem and sent the delegation of Bishops to the court of the Georgian King. Roman historian Tyrannius Rufinus in Historia Ecclesiastica writes about Mirians request to Constantine:
After the church had been built with due magnificence, the people were zealously yearning for God's faith. So an embassy is sent on behalf of the entire nation to the Emperor Constantine, in accordance with the captive woman's advice. The foregoing events are related to him, and a petition submitted, requesting that priests be sent to complete the work which God had begun. Sending them on their way amidst rejoicing and ceremony, the Emperor was far more glad at this news than if he had annexed to the Roman Empire peoples and realms unknown.