The word "juniata" itself is a Seneca word that means either "people of the standing stone" or "blue waters".
If you like Wikipedia.
I guess all you Easterners know how to pronounce Ashtabula - I got that from googling it after asking above.
There is an intersection in the skies above Philadelphia that used to be called "Juniata" - computers shortened it to "JUNIA" because computers cannot handle big words. I always wondered if there was a locomotive shop in Philly named Juniata. I have actually been to Juniata College, and knew it was very far away from Philly.