Comparison of one of the commentaries on the Apocalypse which originated at the Prague University and is contained in the manuscript Osek Cist. 37 of the Prague National Library, ff . 1–129, coming from Osek, dating from 1402 and used to this day by experts, with a copy of the same work in the manuscript I Q 16 of the University Library in Wroclaw, created 1378, has excluded the hitherto assumed authorship of Heřman Švab of Mindelheim, as well as the authorship of Heřman of Prague, assumed, not beyond doubt, by Fr. Stegmüller. Temporal relationship and the data of the colophones of both of these preserved manuscripts lead to the conclusion that the author of this Commentary is an other „Doctor Heřman“, Heřman of Winterswick, a member of the Prague university who composed the Commentary sometime in the late seventies of the 14th century.