Italian States Stamps

Here he is; Ferdinand II King of the Two-Sicilies.In fact his mother
was Dona Maria Isabel de Borbon y Borbon-Parma___(Spain)!

Yes, Sicilia was a Spanis kingdom untill XIX Century. Was the last state down spanish Borbon control untill the unification of italy in 1861.

I'm afraid, this not true. Sicilly belonged to the Spanish empire, up to 1714 when, under the terms of the Utrecht Treaty, passed to Austria. Later, the Spanish branch of Bourbon dinasty, got the "Two Sicilies Crown" (Naples & Sicily). But it doesn't mean that Sicily "was part of the Spanish crown".
Otherwise, after the accesion of the French Bourbon, Philip of Anjou (Felipe V of Castile) it would mean that the Spanish empire, belonged to the French Crown. Which wasn't true.

Napoles was an "independient kingdon", but down spanish contro untill 1861.
literally
"When ascending to the Spanish throne like Carlos III of Spain, Carlos VII of Naples ceded the crown of the kingdoms of Naples and Sicily to its son Fernando. After facing the Napoleonic wars, Fernando returns to take possession of the Neapolitan-Sicilian throne, changing its denomination by the one of Kingdom of the Two Sicilies. The kingdom, under the power of his grandson Francisco II, would be definitively lost after Garibaldi's expedition in 1860".

Now I opened a new post about stamps. Austrian newspaper stamps. I think a really nice topic.
I have doubt arroun the types and subtypes.
Thanks.