Celebrated German painter, born at Lübeck; was head of the new Romantic or Pre-Raphaelite school of German art; had devoted himself to religious subjects, abjured Lutheranism, and joined the Roman Catholic Church; is famed for his frescoes "Christ's Entry into Jerusalem" and "St. Francis" in particular, still more than his oil-paintings; spent most of his life in Rome (1789-1869).