I am wokeing on my Carfi family tree. I need some help in locating my great great grandparents family.

My great great gradfather was Agostino CARFI. He was born in Vizzini, Catania, Sicily. He married Francessca MARTELLO. I have been unable to find out their parents and their brothers and sisters. Any suggestions? If anyone recognises these names please email me.
Thanks. Jessica