'''''Father John Krestiankin''''' ('''''Ioann Krestiankin''''') ({{lang-ru|Отец Иоанн Крестьянкин}}) - [[archimandrite]] of the [[PskovoPskov-Pechersky Monastery|Pskov Caves Monastery]] of [[Russian Orthodox Church]]. He was born in 1910 in the town of Orlov as an eighth child in the family of Mikhail and Elizaveta Krestiankin. The name Ioann was given to the boy in honour of Saint Ioann of Desert. His letters and theological works are well known and widely published in Russia and some other countries. Many cases of Fr. John's clairvoyance and wonderworking were recorded.