A couple more books that I think help paint the picture of Naples/Sicily 1805-1815.

"Lord William Bentinck" Rosselli (1974) Bentinck was the English "governor" in Sicily who basically took over the government and ran it as a dictator. Gives you the true English perspective; which was complete arrogance.

"Sicily - The Insecure Base"" Gregory (1988) This text makes it abundantly clear that Sicily and Naples were two completely different peoples and cultures.

There are more but I'll try and leave it at this for now.