Bacrevantatzy, David an Armenian theologian, was born at Bacran, a city of Greater Armenia, in the early half of the 7th century. After having studied philosophy in his native country, he became interpreter in the service of the Greeks of Constantinople. In 647 he was charged by the emperor Constantius with the establishment of harmony between the two peoples. In an assembly held the following year at Thouin, being sent by Constantius, he delivered a remarkable address in favor of peace. He then returned to Constantinople, where he died. He wrote, The Gate of Wisdom:- Sermon on the Conformity in Profession of the Greek Church with that of the Armenians. See Hoefer, Nouv. Biog. Generale, s. V.