Gaming: New Tara
Did some research and it's official. New Tara is located in Massachussets.

Part of New Tara's story is that it was founded by Irish immigrates during the American colonial period. To keep some illusion of historical accuracy, I wanted to make sure that I chose an area of the US that Irish immigrates may have come to settle their own city. Well, it ends up that there were Irish settlements in all 13 of the American colonies.