FELLER, fel'er or (French) fê"lar', FRANÇOIS XAVIER DE: Belgian Jesuit; b. at Brussels Aug. 18, 1735; d. at Regensburg, Bavaria, May 23, 1802. He entered the order of Jesuits in 1754 and later held professorships at Luxemburg, Liége, and Tyrnau, Hungary, whither he had gone on the expulsion of the Jesuits from France. In 1771 he returned to Belgium, residing in Liége and Luxemburg. In 1794 he removed to Paderborn, and in 1796 to Regensburg. His works, including the Journal de Luxembourg (70 vols., 1774-94) of which the wrote the greater part, number some 120 volumes. The works by which he is best known appeared under the name Flexier de Réval, probably an anagram. They are, Catéchisme philosophique (Liége, 1773); Dictionnaire historique et littéraire (8 vols., 1781; frequently reprinted, with additions, under the title, Biographie universelle (new ed., 8 vols., Lyons, 1860); and Coup d'æil sur le congrès d'Ems (2 vols., Düsseldorf, 1789).