My grandmother's family came to NYC around 1900 from Visciano. Too bad you didn't plan a trip there when you were in Assisi, that is what we did when we were on our tour of Umbria. We wanted to visit the orphanage that my father talked about visiting when he was in Italy just prior to WWII. At that time is was an orphanage for boys or so called boys school. When we got there we found out that it is no coed. We arrived in town as the stores were closing for siesta, the lady in the local bar reopening up made us cafe, gave us some freshly baked cookies that she had just taken out of the oven to sell later when she reopened and didn't want any payment as she was so happy to have us visit. My wife and I don't speak Italian, but managed to get a few people to know that we were descendents of a lady from Visciano and that is all it took. We never did get to meet Padre Artura D'Onofrio that my father talked about from the orphanage as he was taking his siesta and we didn't feel that there was any need to wake a man over 90 years old. We even got invited to lunch by a man on a bicycle, claiming to be a distant cousin, while we were walking back to our car. We had to put him off as we were over three hours late going to visit my father's cousin, my uncle, at the beautiful beach in Scauri.
I did a quick search in the Italian white pages and came up with 16 Rufinos.
Good luck in your search.