Hi Kathleen, Lee S. Clymer was married to my mothers Sister, Lee's parents are Sarah F. Windsor, and James D. Clymer. It might be that Lee and your grandfather were brothers Lee's b 7-24-1894, in Lawson, Ray, Mo. d. 7-20-1972. Has one offspring living but he is in his 80's with bad memory. Could give me no family information.
Apparently they moved from Lawson, Mo to Loveland as they Orpha Alice Swift and Lee R. Clymer were married in Lawson in 1914.
Found an Elmer Lee Clymer of Greeley, he served in WWI, 1917-1918, from Colorado. Was Quarter Master First Class. His records are on page 181 of the ROSTER OF MEN AND WOMEN WHO SERVED IN THE WORLD WAR FROM COLORADO 1917-1918, WELD COUNTY.
That is all the help I have for you hope it is helpful. Eula