Do you have John Stewart Slavens' death certificate from MO? I found it on the State of Mo. website:
#33328 - John Stewart Slavens, born 28 Jan 1891 Laclede, Mo to John Freeman Slavens & Minerva? Clark; died 31 Oct 1956 Roach, Camden Co. Mo of coronary thrombosis; resided Roach, Mo on Lake Rd 45; wf, Lissie Slavens; informant, Mrs. J. S. Slavens; buried 3 Nov. 1956 Roach Cem, Camden Co. MO. If you need this record, I think I could scan it to you.
I wonder if you have any info on the Daniel Fletcher Slavens who was the son of William Slavens? I am researching those families, and they were from Miller & Camden Counties, Missouri. Gerri - email@example.com