There is some evidence that William Stone died in 1891 and that Olive remarried.

Olive was living in San Francisco, California in 1931 [at the time an article about Nathan Boone, written by Lucile Morris, appeared in the Springfield News-Leader] . . . as Ollie A. Murray. My guess is that she remarried an Unknown Murray after her first husband died in 1891 [ccs] Any information on this please contact me . . . .