Brian Lumley expanded on the character of Baron Ferenczy, mentioned but never met in The Case of Charles Dexter Ward, in his Necroscope series, specifically Book IV: Deadspeak, where Janos Ferenczy uses the Yog-Sothoth formula to call forth whole bodies from ash remains, and to return them to that state.
When Dexter's mother hears chanting ("per adonai eloim, adonai jehova, adonai sabaoth, metraton on agla mathon, verbum pythonicum, mysterium salamandrae, conventus sylvorum, antra gnomorum, daemonia coeli gad, almousin, gibor, jehosua, evam, zariatnatmik, veni, veni, veni."