Cyprian, Metropolitan of Kiev
Cyprian (c. 1336 – 16 September 1406) was a prelate of Bulgarian origin, who served as the Metropolitan of Kiev, Rus' and Lithuania (2 December 1375 – 12 February 1376) and the Metropolitan of Kiev and all Rus' (12 February 1376 – 16 September 1406) in the Ecumenical Patriarchate of Constantinople. During both periods, he was opposed by rival hierarchs and by the grand prince of Moscow.
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