Jahn, Johan, a Catholic theologian and Orientalist, born in Moravia; held professorships in Olmütz and Vienna; was distinguished as a Biblical scholar, author of “Biblical Archæology,” in five vols., as well as an Introduction to the Old Testament, with Grammar, Lexicons, &c., in connection with the Biblical languages (1750‒1816).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Jahn, Fred. L. * Jahn, Otto