I thought I would take a look to see if I could trace an E.C. SHAFF.
I found a marriage record for a Sidman S. SHAFF to a Mrs.E.C. LLEWELLEN on 14-Feb-1895 in Callaway Co. MO.Both were residents of Fulton, MO.
Unfortunately I can't find a marriage record for an E.C. MARTIN to a Mr. LLEWELLEN.
It seems Sidman SHAFF was born in PA circa 1845.He died in Dayton, OH in 1932.According to the military headstone order form for him, he was also known as Sidwin S. SHAFT.In 1910, 1920 and 1930 he was in a military home in Dayton, OH.In 1910 he was already listed as widowed.I found his record at the military home which says he was admitted in 1904 and was a widower.This would make E.C.'s death sometime between 1898 and 1904.
I tried looking on findagrave for a SHAFF or SHAFT in Callaway Co, MO with initials E.C. and couldn't find anything.