I have seen Vercellino (not in my family tree) while researching my Vacca, Bosone, Bruno, Perardi, Doglio, Marchetti, et al familes who lived in the Italian Piedmont, an area NW of Torino called the Canavese. Today, while searching the Bisbee, AZ census records for names of Italian immigrants I found a Ronchietto/Ronchetto Cresto who was the aunt of a young man, Domenico Bertino, a natural born citizen of the US, who was living with is mother in Valperga in the Canavese; he was requesting return to the US to work with his father Mike in Bisbee. Also many immigrants from the Canavese have connection to Braidwood, Will Co, Illinois. Hope these clues help in your search. If I find any definitive info about Vercellino I will post it here.