I have Heibergers in my family and am trying to find how they are connected. I have a picture of my great grandfather Edward Louis Friess and his cousin Charles Heiberger. They look like they could be twins. Edward was born in 1879 and I would estimate Charles to be of the same age. I know that Charles later lived in Missouri, but the rest of the family was in New York City, so it is quite possible that he was there at some point as well. Have you run across a Charles in your search? I'm guessing that the connection is a maternal one. Have you run across the names Fries, Friess, or Steinbach by chance?