looking for comino/calligeros family members

I am a Calligeros through marriage, and am trying to trace my husband's relatives. His father is Spero John Calligeros, and his father John, married Katerina Comino, who had a brother called John Peter Comino.

He had the Lithian Cafe in Binnaway in 1926 till about WW2, when he sold it to my father in law. My father in law has a brother Peter, and 4 sisters called Mary, Soula, Koula and Helen. They are from Potamos.

Any information to steer us in the right direction, would be very helpful.