Glad to see you on this board again. Regarding the note from 2009 I responded but perhaps you didn't receive? Even though the Johann Baptiste Kotzbauer is not the same I also believe there could be a connection since many names repeat. I would be interested in any information you have that traces back to your ancestor in 1710. perhaps we have a common one. My great grandfather Johann was born in Regensburg in about 1869. Married marie Offenwanger. He had a son named Hans born 1894 amongst others.