Cyril of White Lake was a Russian monk born as Kozma in Moscow during the 14th century. After entering the Simonov Monastery around 1380, he became a disciple of Sergius of Radonezh. Seeking a life of quiet prayer away from public duties, he relocated to the shores of Lake Beloye with the monk Therapont. There, he established a strict monastic community that eventually grew into one of the largest religious centers in northern Russia.
Life and work
Following his time at Simonov, Cyril sought solitude in a remote area near Lake Beloye. Guided by Sergius of Radonezh, he constructed a wooden chapel and a loghouse to house other monks. While his companion Therapont left to found a separate monastery, Cyril remained to lead the Kirillo-Belozersky Monastery. As its first hegumen, he oversaw the acquisition of significant lands, helping the institution expand its influence.
Veneration
The Russian Orthodox Church recognizes him as a saint, a status formally acknowledged during the Makaryev Sobors in 1547. He is commemorated annually on June 9. His legacy continues through various churches named in his honor across Russia.