Thus, Walpole is arguably the forerunner of such authors as Matthew Gregory Lewis, Charles Robert Maturin, Ann Radcliffe, Bram Stoker, and Daphne du Maurier. (wikipedia)Basically, you will never see OTRANTO in a puzzle unless it is clued via the Horace Walpole novel The Castle of OTRANTO, a work (as I have said before) many of my grad school friends had to read.