I am not sure about being a decendent of Peter Gfeller, but I am also looking to learn about my Gfeller family. My grandfather was Kenneth A. Gfeller, his sister is Darlene Gfeller, (now Newman). My great-grandmother was Marie, she was very artisitic she painted dishes. My grandpa was also artisitic, he was a music director, he was in musicals and worked at WHO radio in Iowa with "Dutch" Reagan. He was also in the Navy during the war.
I don't know if any of this information is helpful in your search, if you have any information that may link or help, please contact me via e-mail. Good Luck!
ptcpatti@yahoo.com