Looking for Lynn from Tennessee

I am looking for my great granddads parents.My g-granddad was William Robert Lynn,born in Indiana,27-Dec.1865.Died in Liberty,Ky. 16-June-1951.On his death certificate his fathers name was given as John Lynn,Moms Name Catherine Wire? Not for sure on her last name.Dad was born in Tennessee.I would apreciate anyones help.Thanks