Saint Martyrius was a monk in the Veliki Luki (Great Meadows) Monastery, and shared a cell with Elder Bogolep. These holy ascetics ate only once a day. After the services in church, they would fulfill the rule of prayer in their cell, then they would work during the night milling corn.
Later, St Martyrius went to live at Zelenets (Green Island), and founded a monastery in the midst of the swamps. By 1582, he was already the igumen of the monastery, which had twelve monks. Several benefactors donated to the monastery, including Theodore Syrkov, Simeon Bekbulatov (the ruler of Kasim), and Tsar Theodore, who donated land.
St Martyrius fell asleep in the Lord in 1603. He is also commemorated on March 1.