It is very possible that we are related, as people immigrated they would change their name and if they did not know how to write it would fall on the person writing the names down as to how it was spelled and also how the person heard it as well. I still get mail that is misspelled by adding an extra letter in or change a letter.
I also have found out that Kugler or various spellings stated in Austria and not Germany. I believe the name is very common in Germany today. A professor told my youngest daughter that the name came from Austria and later I ran across another paper about it coming from Austria.
My Kugler line came to this country in the 1700 and everything that I have found goes back to John Kugler and he came over as an indentured slave settling in Pennsylvania prior to the Rev. War. I would be interested to know what you find out.
Lyle E Kugler