I found the death certificate for Bernhardt on familysearch, and it lists the cemetery as Mt. Peace. Here is the link to the certificate:https://familysearch.org/pal:/MM9.3.1/TH-266-11831-66597-90?...
My suggestion would be to list him on findagrave under the Mt. Peace Cemetery in Akron, Summit Co, Ohio, as that is where his death occurred. Once you make the listing, you can request a photo of the gravestone.
Since he and Pauline were divorced at time of his death, it is possible she is not buried in the same cemetery. You could try calling the Mt Peace Cemetery and see if they have record of Pauline there.
Good luck with your searches!