Don't know if this helps. I was on the Familysearch.org site and typed in Johannes Pettenkoffer. He is listed being from Ingolstadt, Oberbayen, Bayen, Germany. Nothing for the spelling Pethkoffer. There are several Beticofer/Bettekoffer in Ohio and Iowa. **************The year's hottest artists on the red carpet at the Grammy Awards. Go to AOL Music. (http://music.aol.com/grammys?NCID=aolcmp00300000002565)