I sure if she is white or mulatto. I have not found anything else on these two (Joseph and Nancy), I almost want to say it is the right ones since they are the only ones with the same names. I am told it is not uncommon for folks to from VA to marry in MD. Joseph and Nancy, and kids left Loudoun Co. VA after the 1810 census, arriving next door in Jefferson County, Virginia (now West VA). I have not located a death record for either. Thanks