Anton Anastas Sielava was the "Metropolitan of Kiev, Galicia and all Ruthenia" in the Ruthenian Uniate Church — a sui juris Eastern Catholic Church in full communion with the Holy See. He reigned from

Petro Mohyla or Peter Mogila was the Metropolitan of Kiev, Galicia and all Rus' in the Ecumenical Patriarchate of Constantinople in the Eastern Orthodox Church from 1633 to 1646.