What are your Kiefer names? I have a Karl, Maria, and a Josepha Kiefer. Maria married a Brugger and Josepha married a Korbar. My grandfather was Karl Kiefer, his father was Markus Kiefer and his mother was Josefa Taschner. Markus was born about 1857 and the son of Anton Kiefer. The sisters moved to Graz and my grandfather went to the United States.
I friend did a look-up for me a while ago and gave me info on other Kiefer's as well. Where do you live? I am in Wisconsin.