Angelo's
Angelo's Restaurant shows up in back to back episodes in season 10: "Quagmire and Meg" (S10E10), in which Quagmire takes Meg there on a date, and "The Blind Side" (S10E11), in which Brian takes Katie, a blind girl, there on a date. Neither date goes well.
It's unclear whether Family Guy writers merely picked a generic Italian restaurant name, or if they were referencing the real Angelo's Civita Farnese, a fixture on Providence's Federal Hill since 1924. The restaurant as depicted in the show does not resemble the real Angelo's.