Title continues: "Ab origine susceptae fidei ad nostra usque tempora in suis captibus seu primatibus Russiae cum S. Sede Apostolica Romana semper unitae." Kulczynski (1694-1747) was a Ruthenian theologian and historian, author of the first history of the Ukrainian church and first researcher of Belarusian antiquities. The term Ruthenian was used in Eastern and Central Europe as a term for Ukrainians and Belarusians.
