That novel set in this region abruptly notes that a ceiling decorated with Greek gods will be destroyed by a "bomb manufactured in Pittsburgh" while describing a lavish marriage ball.
In the first chapter of a novel set in this region, the protagonist is admonished for visiting a brothel by his family Jesuit priest when they meet in his observatory tower. That novel set in this region abruptly notes that a ceiling decorated with Greek gods will be destroyed by a "bomb manufactured in Pittsburgh" while describing a lavish marriage ball. In a novel set in this region, a family's plan to resell lupin beans is thwarted when a storm wrecks their boat, The Providence. This (*) island is the setting of the novels The Day of the Owl, I Malavoglia, and The Leopard. Characters with ancestry on this island are the subject of novels such as The Last Don by Mario Puzo. For 10 points, Leonardo Sciascia ("SHA-sha") wrote novels about the Mafia of what Italian island?
In the first chapter of a novel set in this region, the protagonist is admonished for visiting a brothel by his family Jesuit priest when they meet in his observatory tower.
Sicily [or Regione Siciliana; prompt on more general answers like Italy or the Mediterranean]