Hello from Ohio, USA. There are very few "Gehringers" in the USA. I know my great-grandfather "Henry Gehringer" (Possibly "Heinrich" and "Goehringer") was born in Germany. His future wife "Sophia Dennan" also came from Germany, and they were married in Cleveland, Ohio in 1887.
Any ideas on how to locate German records when you are not certain of the name? I have a similar issue with "John/Johann Gehringer" . Thank-You.