His obelisk type stone is located in Kent County Michigan, in Alton cemetery.It is still fairly easy to read, but not as well as it was, according to my nearly 90 year old aunt, who helped me find it.
Apparently his location is unknown, even by my great aunt. Warren remarried after Edna's death and he died in Muskegon, Michigan in 1908. His burial place is unknown, or at least unmarked. And as so often happens, the stone remains unfinished. With such a fine marker waiting for him, it is a shame that his final resting place is unknown.