Did Pietro Brun and Caterina Bucco go to Philadelphia, PA the Chestnut Hill area?

My Giovanni Brun and his wife Domenica Bucco, also from Andreis Italy, ended up in PA, in Ridgway, Elk Twp.

Giovanni and Pietro may be cousins and I wonder if Caterina and Domenica are sisters or cousins?

I have ship manifest info from Ellis Island on all persons named, if you are interested.