If indeed you read Turrido someplace it was a spelling error. In Sicilia the name Salvatore, has several nicknames, Toto',Turi, and Turiddu. Sal is an american nickname. Salvatore Giuliano was/is a real person whose nickname is Turi. Puzo did not choose anything, he went with the facts, just like his book "The Sicilian" it is based on fact. Aspanu is the sicilian nickname for Gaspare. Zaza is the nickname for Rosario,etc.. If that indeed WAS Carol Gino in that thread, how could she NOT know that?

Also, Puzo purposely spells Giuliano's name "Guiliano", I presume to get around some legal footwork with his family. The Giuliano family did not approve the book and was angered at the heroic portrayal of the backstabbing Aspanu Pisciotta.