Ostromir_Gospels
The Ostromir Gospels (Russian: Остромирово Евангелие) is the oldest dated book of Kievan Rus'. Archeologists have dated the Novgorod Codex, a wax writing tablet with excerpts from the Psalms, discovered in 2000, to an earlier time range, but unlike the Ostromir Gospels, it does not contain an explicit date. The Ostromir Gospels was created by deacon Gregory for his patron, Posadnik Ostromir of Novgorod, in 1056 or 1057 (the year 6564, in his dating system), probably as a gift for a monastery.