Blessed John the Hairy (also known at John the Merciful of Rostov) was a holy fool (Yurodivy), of the Russian Orthodox Church in the second half of the 16th century. He endured a great many trials in his lifetime. "He did not have a permanent shelter, and at times took his rest at the house of his spiritual Father, a priest at the church of the All-Holy, or with one of the aged widows." According to Orthodox Church in America sources, Blessed John,
"Living in humility, patience and unceasing prayer... spiritually nourished many people, among them St Irenarchus, Hermit of Rostov (January 13). After a long life of pursuing asceticism, he died on September 3, 1580 and was buried, according to his final wishes, beside the church of Saint Blaise beyond the altar."
He had "hair upon his head abundantly," therefore he was called "Hairy." The title "Merciful" was given to Blessed John because of the many healings that occurred at his grave, and also in connection with the memory of the holy Patriarch John the Merciful (November 12), whose name he shared.[1]
Blessed John the Hairy is commemorated on November 12 in the Eastern Orthodox Church.