Uncovering Irish History in Lowell, MA and Northern Ireland

My grandfather worked in the Lowell mills in the early 1900,s.He fought in world war 1.His name is Patty McGeoghegan from Armaugh Northern Ireland Cherryville ?st. Did anyone hear of him? My mother said he was a supervisor,which was rare in those days to be Irish and obtain a position as a SUPERVISOR. Would love to see this display .I live close to Boston so I can get there easily.