St. Anthimos, who in the world was known as Argyrios K. Vagianos, was born on July 1, 1869 to devout peasants, Konstantinos and Argyra, in Chios in the region of St. Luke Leivadion. He left elementary school early to become a shoe mender. At the age of nineteen he visited the Skete of the Holy Fathers founded by the monk Pachomios, who had been the spiritual counselor of St Nektarios. With the blessing of the elder, Anthimos returned home and built himself a small hut and dwelt in it. His only help in his spiritual contests was an icon of the Mother of God given to him by his mother later known as Panagia Voithia (the Helper), which soon began to work miracles, drawing many to his hermitage. He had returned home to relieve the suffering of his parents and help the poor of his village as well. After a time he retired to the Skete, and it was here that he became a monk and took the name Anthimos given by Elder Pachomios. He fell ill there and his abbot sent him home to his parents for the sake of his health. At home, despite the fact that he was caring for his aged parents and practicing his shoe mender's trade, he continued to live as a monk, spending nights on end in prayer and sometimes living only on bread and water for extended periods. He took his inspiration reading about the lives of the great ascetics, and in this way he was able to conquer every assault of the devil.
Increasing numbers of visitors came to his hermitage and wonder-working icon of the Theotokos, and in 1909, at the age of forty, he received the Great Schema by the successor of Pachomios, Hieromonk Andronikos. The people of Chios wanted him to be ordained to the priesthood, but his bishop refused due to the Saint's lack of education. At the prompting of Anthimos' godfather, the Bishop of Smyrna ordained him instead in 1910. After a pilgrimage to Mt Athos in 1911, he returned to Chios, where he became chaplain to a leper hospital. Soon the hospital, which had fallen into corruption, became a spiritual center, as much like a monastery as a hospital. Saint Anthimos tended many of the sickest with his own hands, working many miracles of healing; some of his recovered patients became monks or nuns (such as Venerable Nikephoros the Blind).
With the notorious 'Exchange of Populations' of 1922-1924, refugees poured into Chios, many of them destitute nuns and girls. In response to a vision of the Mother of God, St Anthimos built a monastery in 1930, which opened with thirty nuns and grew rapidly, despite the opposition of many who said that setting up such a community was out of date. The Monastery of Panagia Voithia, as it came to be known, soon housed eighty nuns and was known throughout Greece as a model of monastic life. Father Anthimos served as priest to the nuns, and continued to receive the many faithful — often sixty or seventy per day — who came to him for prayer or counsel. He carried on this ministry for more than thirty years, working many miracles of healing. When he was too old to work with his hands, he retired to his cell and prayed that he be enabled to serve his neighbor until his last breath.
On January 27, 1960 St. Anthimos celebrated his final Divine Liturgy. He reposed in peace at the age of ninety-one on February 15th, mourned and revered by the whole island of Chios. The remains of St. Anthimos are in the church inside of the monastery he founded and still work miracles along with the holy icon of Panagia Voithia. He was canonized by the Ecumenical Patriarchate on August 13, 1992.
"I have been found worthy to receive the blessing of two sacred personalities, while still alive, that were canonized. One of these is St. Anthimos of Chios. When I was a child, I injured my eye. I was afraid that, if my father found out, that he would beat me. I remember it had become bruised as well. What would I do? I thought that I should go to the holy man up at Panagia Voithia Monastery. I told him my problem. He read a prayer over me, crossed me, and healed me! Receiving his blessing, I left.
The other holy personality that I had the blessing to meet was another Saint of Chios, Saint Symeon, the abbot of Psaron. From the age of 8 I would go to the Monastery and learn letters studying the Psalms of David! I remember he was a strogly built man and upkept the monastery buildings with much love. At night they would hear him go to a gorge next to the Monastery and break stones, in order to, as he would say, tame himself through work and for the devil to not battle against him. In the morning he would be prompt for Services. I was blessed, from the age of five, to be near him" (ΑΠΟΣΤΟΛΗ, num. 55, Winter 2003-04).
A Miracle of St. Anthimos is related here.
Video on the Life of St. Anthimos of Chios
See also links here.