Sainted Theon asceticised during the XVI Century on Athos, at first in the monastery of the Pantokrator, and then in the Shersk (Hair) skete-monastery of Saint John, the Venerable ForeRunner and Baptist of the Lord. Here his guide was the Monk Jakov (James) of Iveria. After the martyr's death of his spiritual-guide, Saint Theon became head of the monastery of the holy GreatMartyress Anastasia on the outskirts of the village of Galatista. He was ordained bishop and was elevated at Soluneia (Thessalonika) to the metropolitan cathedra-seat. The final years of his life were spent in deeds of solitude near the monastery of the holy GreatMartyress Anastasia Alleviatrix-of-Captives (Comm. 22 December), wherein also his holy relics now rest, together with the head and right hand of the GreatMartyress Anastasia, and the heads of three monk-martyrs that suffered under the Turks – James, another James, and Arsenios. 
