Hi John and Kerry,
My mother has no recollection of relatives in Vizzini. She is going to ask other relatives to see if anyone else knows more. However, she did mention that my great-grandfather's brother's name was Vincenzo Ialuna. She says he lived in Gran Michele (Spelling?) which is not far from Mineo or Vizzini. My father's name is Giuseppe Ialuna and he is 70 years old now. Mom also mentioned that there was another Ialuna family in Mineo that we were NOT related to and that you may be related to them.
Does this help?
Elena