T he earliest historical evidence on the monastery of Christ Akataleptos dates from the turn of the first millennium. It appears however that the monument is even older, because some indirect information places it in the 7th century. The monastery was located near the Valens Aqueduct.
Some dates shed light on the history of the monument.
The monastery of Christ Akataleptos is first mentioned in 1092, in the Alexiad by the princess Anna Comnena. In 1301 Maximus Planoudes, while at the monastery, writes Cod. 844 was also written in this monastery at the turn of the 13th century. On 10 May 1363, the ecclesiarch of the monastery of Christ Akataleptos witnesses the instrument confirming the purchase of holy relics at Constantinople. In 1440 Gerasimus, hieromonk and domesticus of the monastery, binds Cod.