Asaro Family from Mazara del Vallo, Sicily

I am currently looking for descendents of my husbands family, children of Antonino and Vita Maria (Vultaggio) Asaro.
His grandparents were Francesco (their son) and Antonina (Zinna) Asaro, born circa 1840.I am trying to make a connection with any descendents of Francesco's siblings.
I think perhaps one of the cousin's name was Filipo, and he had a son Rosario who came to the US, and to St. Louis in April 1905.
Any info would be most exciting.