Roger,
This is an old query, but I know exactly where Charlie B. and Lillie B. are buried. The spelling of the Surname on the tombstones is FOULKS.
Driving from Wellston to the cemetery you would be headed West. The first gate is the entry closest to their graves. (Gates are on the north side of cemetery. This gate is the northeast gate.) They are in the 4th row east of the gate. Charlie's dates are 8-18-1872 & 7-21-1950. Lillie's dates are 1-16-1877 & 4-11-1945. This is the 7th visible tombstone (counting from the fence, headed south). The 6th stone, just north of them is for Margaret Foulks, b&d 1919, dau. of Mr. & Mrs. Foulks.
If you are in Oklahoma, the Oklahoma Historical Society has microfilms of THE WELLSTON NEWS and there may be obituaries or some mention of these events in the newspaper.
Annie