And here in a newspaper clipping from the 1950s, his name is mentioned some fifty years after his death. I'm not sure how accurate the information is, but it makes the point that one needs to consider searching for people in printed materials long after they died. Historical accounts are often published in newspapers. This item came from an apparent special section spotlighting various Nebraska counties and was located on GenealogyBank.com.
Date: Sunday, November 28, 1954
Paper: Omaha World Herald (Omaha, NE)obtained on GenealogyBank.com.
It seems reasonable that a German would spell a town in the "German" way. Whether or not Ehmen was the originator of the spelling is a matter of debate.