The Sinozero Hermitage
According to tradition, Gury Shalochsky joined Venerable Euphrosynus of Sinozero in founding a hermitage in the wild forest of the Novgorod North. The hermitage stood on the eastern shore of Sinychi (Sinozero, "Blue Jay") Lake, near the Chagodoshcha River, more than fifteen versts from the village of Dolosskaya in the Ustyuzhna district of the Novgorod region.
The foundation is attested by the royal charter of Tsar Mikhail Feodorovich, dated February 22 / March 3, 1636, which records that the monks "settled in that hermitage at Sinychi Lake, on our empty land, in wild forest, on the Chagodoshcha River." The charter places the founding in the year 7100 by the old reckoning, corresponding to 1591/1592 in modern dating; the anchor tradition remembers Gury as an early-17th-century figure, and the hermitage later grew as disciples gathered around Euphrosynus.