Looking for William Harrison Derby Ohio 1888

William Harrison Derby was born in Norwalk, Ohio abt. 1888 and married Ena Pearl Denman of Elyria, Ohio. They had at least two children: Elmer harrison Derby and William Parker Derby. It is the William Parker Derby line I am most interested in si9nce he and my wife's mother Shirley Eleanore Bilton had two daughters (both are now dead). I know he moved to S. California where he died in Glendora in 1968. Any help with this family would be greatly appreciated.