I am interested in this board because my earliest known paternal ancestor was named Anton Kaeni, who lived in south Baden near the Swiss border. A local historian/genealogist there has found a paper trail linking Anton directly to one Barthli Kueni who was probably born in Rheinfelden in about 1565. He has found a progressive mutation in the spelling of the surname by the largely illiterate population of the area from Kueni (or Cueni) to Kaeni to Kaehni to Kaehny. Thus I perhaps should be looking at Kueni/Cueni genealogy to get back farther than Barthli. Anyone know anything about this?