Agop, John, an Armenian priest, lived at Rome in the latter half of the 17th century. - He wrote an Arinenian Grammar (Rome, 1674) :'-a Latin Grammar (ibid. 1675), in Armenian:-and an Italian translation of the correspondence of Constantine the Great and of pope Sylvester with Tiridates, king of Armenia (Venice, 1683). See Hoefer, Nouv. Biog. Generale, s.v.'