:Hi Luca - glad I could help. I've created a translation of Marco Bertolotto to help with English Wikipedia's coverage in this area. 
 :I see that in Italian Wikipedia you have added a succession box showing the links between Bertolotto, Spanu, and Vacarezza - we could add a succession box to the articles here in English Wikipedia too.  
 :To answer your question - I'm British and I live in eastern England.