Of all the Italian names to have....Caruso seems to be the most generic and confusing one of all when searching for family!

I am trying to find information on Caruso's who originated in Trabia, Sicily. THere were five brothers, Anthony, Giuseppe, Angelo, Francesco and Salvatore. Parents: Salvatoura Balistreri & Joseph - Giussepe Caruso. Salvatore was the only brother who remained in Sicily with his parents. The other boys all travelled by boat to Ellis Island and then travelled to Ontario where they raised their families.
I am now working on our family tree and know little about the son who stayed behind. I do know he has a grandson still living in Trabia. Would love to find records for this brother's family. Anyone know where would I begin?
mcmusic