The celebration of the Synaxis of the Rostov and Yaroslav Saints on May 23 was established by resolution of His Holiness Patriarch Alexis I (+ 1970) and the Holy Synod of the Russian Orthodox Church, on March 10, 1964.
Saint Ignatius was Bishop of Rostov, and shepherded his flock for twenty-six years. After his death on May 28, 1288, his body was brought to the church. Some people saw him leave his coffin, and float in the air above the church. He blessed the people and the city, then went back to his coffin.
Many miracles took place at his grave.