My great-great grandfather was Anthony Ragosta from Baia e Latina outside of Naples. He was a widower with children and remarried (I don't have the name of either his first or second wife).
The New England Ragostas (particularly in Rhode Island) were supposedly descended from Anthony's first family.
My family was descended from his first son Vincent Anthony, born August 7, 1873.
The only way this would fit with your dates is if my family was from Arthur's first marriage and yours was from the second. If that's not the case, then we are probably more distantly related than that.