The direct line of Duvalls are as follows: Daniel Reece Herbert Duvall born 1867 in Ohio and died in Michigan, Daniel Duvall born in 1842 in Ohio and died in Michigan, Daniel Duvall born in 1808 in Ohio and not too sure where, William born in 1774 in Maryland and died in 1848 in Ohio. Wives of the Duvall Men are as follows:

Daniel Reece Herbert Duvall Ethel Noggle Duvall and a German lady in New York.

Daniel L. Duvall Elizabeth Crain

Daniel Duvall Catherine Walley

William Duvall Sarah Hinton

Daniel Reece Herbert Duvall had three sons in New York from the "German" lady. The boys were born between 1909-1920.
I have to go through the records to get the names of the boys, who were half brothers of my grandmother, and the name of his second wife. Should you have any other questions, you can e-mail me at lgmazei@aol.com or simply respond or both.