Pez, Hieronymus a learned German Benedictine, brother of the preceding, was born at Ips in 1685. After having taken the Benedictine habit in the monastery of Molk, he began, with his brother, the search for unpublished historical documents concealed in the archives and libraries of Austria and Bavaria. Placed later at the head of the library of his convent, he passed the last fifteen years of his life in the most profound retreat. He died October 14, 1762. We have of his works, Acta S. Colomani, Scotice regis (Krems, 1713, 4to): — Scriptores rerum Austriacarum veteres, cum notis et observationibus (Leips. 1720-1725, 2 volumes, fol.), followed by a third volume. published in 1745 at Ratisbon; a very precious collection: — Historia S. Leopoldi, Austriae marchionis, id nominis 4, ex diplomatibus adornata (Vienna, 1747, fol.). See Meusel, Lexikon; Schrockh, Leben v. Pez (in the Leipziger Gelehrte Zeitung for 1762, page 737). — Hoefer, Nouv. Biog. Generale, 39:789.