I have Stella Obeshaw's compiled marriages that go to 1865 for Mackinac County and no Kirtlands appear that I can find. She transcribed these from the Mackinac Co. Courthouse. This includes catholic marriages as well as JP preformed marriages - sorry I could be of more help. Perhaps your Kirtlands were married in a Protestant church? Were your people listed as living in Holmes Twp on the 1860 or some other location in Mackinac County?? Thanks, Terry