The Holy Martyr John of Merv

Fr. Touma Bitar tells us in his Forgotten Saints that that according to the Muslim scholar al-Biruni (d. 1048), the calendar used by the Orthodox in Khwarizm (that is, eastern Persia) commemorated on July 14 a martyr named John from Merv in modern-day Turkmenistan. He was killed by the Muslims for his faith in Christ in the first part of the 11th century.