I was reading your message and they seems to be some common areas. My Great Grandfather was Angelo DeSantis who arrived in the states in the arround 1890. He was born in Bonito (58 miles from Campobasso) and he had a son Vincenzo (James) and his wife was Rose Palladino.
Angelos parents were Crescenzio and Filomena Merola. Roses parents were Luigi Palladino and Filomena Belmonte.
Rose died in 1910 and Angelo sent home for a new wife and married an Elvira Vitiello from the area.