Interesting to see you looking for John Mohrhardt. My father and grandfather were both John Mohrhardt. Father born in 1910 and grandfather in 1880. My brother (1941) passed away and was John as is my son born in 1976. I think you may find some Mohrhardts buried in the Lutheran cemetary in Freedonia Township in Calhoun County near Battle Creek. Good Luck. I am from Traverse City, MI. Maybe we can figure out which branch of the family your are looking for. I have thought about researching our family but have not undertaken it yet.