I have a friend who is from Ottenheim in Lincoln County. Her grandparents were originally from Germany and came to Lincoln County.
I jsut emailed her and she said that she did some research in the UK library years ago and that Ottenhein was fell under the older communites during the earlier cencus. These would be Highland, Waynesburg, Broughtentown, or Crab Orchard according to her. She thinks she found it under Highlands at the time.