DENIFLE, HEINRICH SEUSE ,i844-19o5), Austrian historian and priest, was born on Jan. 16, 1844 at Imst. After becoming a Dominican in 1861, he studied at Graz, Rome and Marseille, and then from 1870 to 1880 taught philosophy and theology at Graz. Ten years after his first important work, Das geistliche Leben. Eine Blumenlese aus den deutschen Mystikern des 14 Jahr., Denifle became in 1883 sub-archivist of the Vatican. Then came a series of erudite works which have revolutionized our knowledge of the middle ages. In 1885 appeared Die Uni versitaten des Mittelalters bis Ivo; in 1889-97 the edition (to gether with Chatelain) of Chartularium Univ. Paris; in 1894-97 Liber Procuratorum Nationis Anglicanae 1333-46; in 1888 Speci mina palaeographica Regestorum Pontificum ab Innocentio ab Urbanum v.; in 1889 La guerre de cent ans et la desolation des eglises, monasteres, et hopitaux, t. I. jusqu'd la mort de Chas. v. (1385); in 1897 La desolation des eglises, monasteres, hopitaux, en France vers le milieu du XVe siecle (based on some 1,3oo documents). The publication in 19°4 of Luther u. Luthertum, based on original documents, was followed in the same year by Luther in rationalistischer u. christlicher Beleuchtung, a reply to the defence of Luther by Harnack and Seeberg, and by a second volume posthumously in 19°9. Besides short articles on various mediaeval mystics, in 1885 Denifle together with Ehrle founded the invaluable Archiv f. Lit. u. Kirchengeschichte des Mittelalters.