Henry David Bartlett was born on November 22, 1893 to Charles L. and Ida (Bartlett) Bartlett on Bartlett's Island, Maine. He first married Grace C. Nice and second Georgia L. Richards (1899-1987), daughter of George L. and Addie L. (Higgins) Richards. He worked for the Morrison Lumber Company in Trenton, Maine. Henry D. Bartlett died on June 13, 1962.
Henry David Bartlett was the nephew of Albert A. Bartlett who was Henry's father, Charles L. Bartlett's brother.