Hi there,im not really sure to where they all really came from.But i do know before they came to the USA they lived in Lercara Friddi ,Palermo.I even tracked down cousins still there today with the name spelled Schiro.I will give you some names.
Maddalena
Francesco
Nicola
Gaetano
They was brother and siter that i know of.Parents Basilio and Vincenza?
married into the Schiro line is Miceli..Lo Bue..Franzina..Porcari..