Saint Nicholas of Myra, also known as Nicholas of Bari, is revered by Orthodox Christians as a Wonderworker. Saint Nicholas was a native of the Lycian city of Patara. He was born about 270 into a family that owned a fishing fleet; he was a skilled seaman, and later became bishop of Myra. That is why in iconography he is usually depicted with a mitre on his head - as a symbol of bishopric.
To the laymen world, Nicholas the Wonderworker is known primarily as a prototype of Santa Claus. The reason was the saint's life, which is an example of kindness, generosity and unselfishness. Coming from a wealthy family, he inherited his parents' fortune, most of which he gave to charity. The tale of the poor man is especially well known. This man had three daughters whom he could not marry off as he had nothing to give them as a dowry. It meant that they were to remain unmarried and live in poverty. Nicholas learned of the poor man's sorrows and wanted to help him. But modesty prevented him from doing so openly, so he came to the poor man's house under cover of night and threw three purses of gold through his window (according to another version, through the chimney).
In the main cathedral of Stavronikita Monastery on Holy Mount Athos there is a miracle-working icon of St. Nicholas the Wonderworker. The relics of the saint rest in the basilica of the Italian city of Bari.
Glorious St. Nicholas, my special patron, from thy throne in glory, where thou dost enjoy the presence of God, turn thine eyes in pity upon me and obtain for me from our Lord the graces and helps that I need in my spiritual and temporal necessities (and especially this favor [mention your request], provided that it be profitable to my salvation). Be mindful, likewise, O glorious and saintly Bishop, of our Sovereign Pontiff, of Holy Church, and of all Christian people. Bring back to the right way of salvation all those who are living steeped in sin and blinded by the darkness of ignorance, error, and heresy. Comfort the afflicted, provide for the needy, strengthen the fearful, defend the oppressed, give health to the infirm; cause all men to experience the effects of thy powerful intercession with the supreme Giver of every good and perfect gift. Amen.