"Ephraim, b. June 15, 1734; living in April, 1788, when he is mentioned in his father's will, but his name does not appear in the first Boston directory of 1789; he is probably the Ephraim living in Eastport, Me., 1785-1787; in September, 1783, 'Ephraim Fenno & Wm Sharp appointed by the Selectmen [of Boston] to observe & bring to Justice any Person or Persons who shall transgress the Laws by firing Guns upon the Neck and the bottom of the Common and other places within the limits of the Town.' Ephraim Fenno, evidently of Boston, is Captain-Lieutenant in Col. Lamb's Artillery in Continental Army, Jan. 1, 1777 to Dec. 31, 1779; Jan. 17, 1780, is reported prisoner at New York."
It seems unlikely that a Middletown man would be living in Boston or Down East Maine during the 1780s, but no record appears tying him to Middletown during that period.