Check out Richland County Cemeteries. They have a very nice web site with much ggod information. list Larry B Rose [11-07-1935 to 9-9-1997] as the son of Donald & Ruth C (nee Burghorn) ROSE. Donald and Ruth are also listed there at Sand Prairie.
I do not know the family, but woud assume that obituaries from the Richland Center weekly paper should be available. Check with the local history room at the Richland County Library.