Morrison Farm Burial Site ?

I am looking for help to find if there is a burial site for William C. Morrison and Nancy A. Morrison on the old "Morrison Farms. (possibly previously called Duncan's farms)"These burials would date back to 1835 and 1838, and my information says the farm was in Mechanic Township, Holmes Co.I am visiting next week and would sure love to know if these sites still exist and how I might find them.thank you very much.