Photos by Rebecca Branconi A century after his great-grandparents left a small Laziale town for America, Steve Decina has reversed the voyage, choosing to raise his children in the land of his forebears. I will never forget the first time I saw San Donato. I had just crossed the Apennines from Pescara and descended into the Val di Comino. I drove, awestruck, into the gently lit village nestled into a notch between two snow-dusted mountains. It was incredibly beautiful — it reminded me of a presepe, the elaborate Italian Nativity scene that often sets the Holy Family among life in …