I volunteer on Tuesdays at the Bryan County Genealogy Library.I was very busy today, but did have time to look through our cemetery records for Betts and this is what I found: Unnamed Cemetery - loc 5-1/2 mi north of Durant on the Pool Ranch. This would put you in vicinity of Armstrong Twp- not Armstrong Academy which was near Bokchito.Several unmarked gave in this cemetery. Idell BettsJan 19, 1894 - Aug 15, 1899 dau of W.W./D/E. George Ramsey BettsOct 2, 1897 - July 30, 1899son of W.W./D/E. Charley Hardee BettsMar 5, 1899 - Apr 30, 1899 Cora BettsMay 14, 1899 - Oct 19, 1889 dau of W.W./D/E.
Pleasant Hill Cemetery3-1/2 mi E & 1/2 mi N of Armstrong: Charles Edward Betts1850 - Dec 25, 1895 Mollie McGrey Bettsno DOB - June 1859no stone for either.
Impson Cemetery located 2 mi east of Bokchito, past Reynolds Chapel Church.This area was known at the Slide Up and Hitch Community. Ely D. Bettsno DOB - Sep 18, 18661-yr 9-mo 8-day son of R.D. & Emaline.
Sorry I did not find the person you were looking for but I hope some of this helps.