I am pretty sure we have common relatives but I have not looked at all your info enough to make the connection. We have Pacelli's on 3 or 4 sides of our family and many are from San Salvatore Telesino, others were from Salerno or San Valentino I believe.
I believe my nana remembers meeting relatives from your side in New Jersey or New York long ago and only then found out they were related. We have a few Grace's as well. My nana says she still speaks with cousins or relatives in CT, PA, FL and others went to TX etc.
My nana is Mariantoinette Miranda (maiden name) and her parents were Carmine joseph Miranda and Margaret Michela Pacelli. Her mothers parents were Maria Grazia (Grace) Votto and Luigi Pacelli. Also, Marie Grazia Votto is the daughter to Maria Grazia Pacelli Which I believe is cousins to Luigi just above.
Finally, we also have Pacelli's on her Fathers side as well. Her father Is Carmine Joseph Miranda and his parents are Giuseppe Miranda and Rosa Pacelli.
I have alot of info but have not yet had time to sort through it all. I know we are tied to many with last names other than Pacelli, Votto, Miranda, such as Rabuano (Rapuano), Gaudio, Naples, Guglielmo, DiPalma, and maybe DiSanto, Mattei, DiFilippo, among others. I think Amadio might be somewhere also but I only remember an Amadio first name right now.
Email me above if anything sounds familiar or even if it does not.