Dating fra poland
Princess Olga of Kiev was the first ruler of Kievan Rus to convert to Christianity, either in 945 or 957.
Undoubtedly influenced by his Christian grandmother and by a proposed marriage alliance with the Byzantine imperial family, Olga's grandson Vladimir I (c.
956-1015) prince of Kiev, from among several options, chose the Byzantine rite.
Baptized in 988, he led the Kievans to Christianity.
There is evidence that the first Christian bishop was sent to Novgorod from Constantinople either by Patriarch Photius or Patriarch Ignatius, circa 866-867 AD.