theodontius was the author of a now lost latin work on mythology. he was extensively quoted in giovanni boccaccio's "genealogia deorum gentilium", but is otherwise almost unknown. boccaccio says that he knew theodontius's work through the "collections" of paul of perugia, which paul's wife burnt after his death ("genealogiae" xv 6). in telling the legend of bathyllus, however, boccaccio complains that theodontius was illegible except for bathyllus's birth, from phorcys and a marine monster ("genealogiae" x 7), so he may have seen some of theodontius's own writings; sources disagree on this. some authorities think boccaccio invented him.