The ancestry and posterity of Joshua Dow of Avon, Maine traces from John Dow and Johan Coop of Great Yarmouth, Norfolk, England. The first descendant in America, Henry Dow, came from England to America in 1637 with his wife, four children, and a maid. He first settled at Watertown, Massachusetts before relocating to Hampton, New Hampshire. He wrote his surname variously as Dow, Dow and Doue. One of the first Dow to settle in Avon, was Joshua, son of John and Betsey (Strout) Dow, who moved from Portland to Avon soon after his brother and sister, and settled before 1828 near Mt. Blue and Mt. Blue Pond.
Surnames: Briggs, Bryon, Crockett, Davenport, Dickey, Doue, Dow, Dowe, Dresser, Dunham, Esty, Hall, Harnden, Harradon, Hinkley, Kinney, Kittredge, Ladd, McLaughlin, Mitchell, Orberton, Pettingell, Richardson, Ross, Sampson, Sedgeley, Stinchfield, Vining, Walton, Webber, and Worthley.