Back in the 1700s and 1800s they were not concerned as to how to spell surnames. Especially with German immigrants.
When Paul arrived in 1771 his name was Acramon. Then it was Ackerman, and sometimes Aukerman. I have also seen Ackermann and Akerman. Then in a document from Manor Township it was spelled Aherman. I believe it to be a transcribe error mistaking the k for a h. I don’t have the actual document to see how it was spelled.
According to Phyllis Olewine, she listed probably 50 different spellings of Olewine.