Mayr, Colestin a German theologian, was born April 21, 1679, at Donauworth. In 1698 he entered the Benedictine Order at Augsburg; later he became a student at the University of Salzburg, where in 1711 he was appointed professor of philosophy. In 1713 he obtained the professorship of polemical theology, and the inspection of the Salzburg schools. About this time he was made doctor of divinity. In 1714 he was appointed ecclesiastical counselor of the duke of Salzburg, and at the same time became professor of scholastic theology. In 1716 he was appointed vice-rector of the university, in 1719 pro-chancellor, and in 1728 chief rector. In 1731 he retired from academic life, and thereafter held an official relation to the cloister Linzheim, in Neuburg, where he died, March 19, 1753. Mayr enjoyed great prominence as a writer of theology, but his productions have never been collected in book form. They consist mainly of dissertations and contributions to different journals. For a list of his writings, see Doring, Gelehrte Theol. Deutschlands, vol. ii, s.v.