Thank you for writing. I was beginning to think noone was out there. My grandmother Nadine told me that she has a complete listing of Duvall side of my family she is suppose to make a copy for me. I was so young when Great Grandpa Jimmy died. I barely remember the funeral. My grandmother I believe is the youngest of Jimmy's children and my mother is the youngest of Nadine's children.
I am to believe that Jimmy's farm is still going in Rozet, Wyoming. I can only remember going there once and at that time Jimmy's was beginning to decline in health. Although he did sit in his chair and tell stories.
If I can help you with the Duvall family, please let me know. It is neat meeting a family member on the internet.
You mentioned you have to search in Germany for the Vontz family do you know where the Duvall family originated?