He looks like he should be one of "mine" but I have not come up anything that really identifies him.
John P. Dunton He's on the Bar Harbor census of 1900, 1910, and 1920 (in 1900 and 1910 Bar Harbor was Eden). Gone on the 1930 census-died? Born ME + both parents; big variation in birth, 1843-1855; married (his 2nd) Clara E. about 1885-1888.
Clara is on the 1930 Bar Harbor census then gone (died?).