I grew up in what we call "Ravioli Alley" in Bureau County a bit west of LaSalle/Peru. "Ravioli Alley" is a string of towns running from Spring Valley up state Rt 89 to Cherry (my home town).
Yes, for some reason, in this area, folks call tortellin...ravioli...or "rav's". Have been trying to figure out why for many years.
These towns popped up around 1900....all coal mine, ethnic, Italian, Polish, Irish, catholic oriented. Many of the taverns there have Italian roots and have longer served a unique combination of "rav's" and fried chicken!
My Mother was Italian....my Father was Irish and grew up on a farm north of Cherry. Many of the country boys would make their way into town in the 30's and 40's to have fun at the Italian taverns and chaise the Italian girls.
I have a completely unproven theory that at some point these Italian tavern owners started to fry chicken to appeal to all these farmer boys who were coming to town and maybe didn't think pasta alone was a true meal. Further, maybe these farmer boys incorrectly called tortellini "ravioli"....much like they often would mispronounce "eye-tal-yun" and "pa-sket-ee?" I have heard that "ravioli" was a common canned c-ration during WW II....wondered if "ravioli" was somehow used generically by non-Italians to identify all types of pasta? Again, a completely unfounded theory.