I have a strong interst in the information you have posted. I have been trying to trace my paternal roots without success. Here's what I know.
My grandfather, John Fred Duell, was born in Minnesota. He had 4 brothers -- all with the first name John and different middle names. His parents (no one knows their names) moved from New York to Minnesota. The birthdate you have for Fred Duell would be roughly the right time for my grandfather's father to have been born. Do you have any additional information on him? Thanks