During Russia's Time of Troubles, Polish-Lithuanian forces attacked the remote Blue Jay Lake Monastery, seeking valuables and supplies amid widespread instability and famine. Orthodox Monasteries were frequent targets, as they were believed to hold wealth.

St. Euphrosynus, a monk of the monastery, warned others to flee but chose to remain behind. When the soldiers found no treasure, they killed him. His death reflects the violence and desperation of the era, when foreign troops moved through Russian lands during a period of political collapse following the end of the Rurik dynasty.

Euphrosynus was an Orthodox hermit and founder of the Blue Jay Lake monastery, a former church reader who embraced an intensely ascetic life of solitude, fasting, and prayer. When Polish-Lithuanian raiders attacked during the Time of Troubles, he is remembered as having faced death as a schemamonk, making his martyrdom especially significant in Orthodox memory as the witness of a monk who had renounced the world completely.