The grave found by Barbara Jean Duren matches the younger John Melville. You may be looking for the grave next to it... FindAGrave memorial #143612235]
John Melville departed this life March 12, 1867, Aged 72
Elizabeth, wife of John Melville, departed this life April 11, 1866, Aged 67
Your comment, "died 4/11/1856 in Russell Wis" matches the death date of his wife.
Russell is an unincorporated town on the Illinois/Wisconsin border, and Oakdale Cemetery is in Illinois about a mile from Wisconsin.