I don't know where James Campbell ARMSTRONG fits in, but I do have a little bit on the other folks who were from Washington Co., IN.
Iva Onis Fultz (03 Mar 1890-06 Aug 1955) was the daughter of Martin Fultz (1862-1895) and his wife Mary J. Benson (1866-1892).
Thomas Jefferson CAMPBELL (03 Apr 1888-05 Dec 1963) was the son of Richard CAMPBELL born in Kentucky and his wife Martha Ella CHASTAIN (abt 1867-18 Jul 1936). I don't know anything more about Richard CAMPBELL.Martha Ella m2 William PEARCY after about 1920. Martha Ella CHASTAIN was the daugter of Wesley Barnett CHASTAIN (15 Feb 1847-23 Mar 1933) and his wife Mary Ann GOODPASTURE (26 Sep 1843-16 Mar 1931).She was called Ella.Wesley Barrett CHASTAIN was the son of Barnett CHASTAIN, Jr. (27 Apr 1818-25 Oct 1896) and his wife Mary WILSON (30 May 1815-07 Jan 1895).
Barnett CHASTAIN, Jr. was the son of Barnett CHASTAIN, Sr. and Sarah Ann HIXON who came from Franklin Co., VA.