To re-pay its war loans Massachusetts increased taxes which highly affected the farmers when farmers were not able to pay the highly increased taxes their farmland was taken from them which was the only source of living.
Daniel shays a Massachusetts farmer and the former captain of the continental army led a farmer rebellion against the state's highly increased taxes on farmers.
Honestly, I tried to look but I don't know. Here's a picture of the general area that it should be around (the red box). This is in Italy north of Rome.