Such a theory, according to the director of the "Corriere del Mezzogiorno", Marco Demarco, came from an "anonymous source" reported by Ugo Pirro in the magazine "Oggi" in 1950. Actually, two detailed sources document the episode described by Saviano. A later and better-known one is by Carlo del Balzo, who describes the tragedy suffered by the Croce family in a book published shortly after the event: "Cronaca del Tremuoto di Casamicciola" ("Report on the Casamicciola Earthquake") (Naples: Carluccio, De Blasio & Co., 1883). Nevertheless, there is also a previous book drawn on by Carlo del Balzo, titled "Ricordi. Casamicciola e le sue rovine. Cenni storici – Geografici – Cronologici" ("Memories. Casamicciola and its ruins. Historical – Geographic – Chronological Accounts") (Naples: Prete, 1883.). The passage taken by del Balzo is the following: