The Ostromir Gospels (Russian: Остромирово Евангелие) is the second oldest dated East Slavic book (it was considered the first before the Novgorod Codex was discovered in 2000). It was created by deacon Gregory for his patron, Posadnik Ostromir of Novgorod, in 1056 or 1057, probably as a gift for a monastery.
Read more about Ostromir Gospels: The Book, Later History