Thank you. I also believe I am correct in thinking that Nancy and Rachel's status of "widow" in the 1880 census was to cover up the fact that neither of them married.
I know that Ann was born in North Carolina and sometimes I find that Nancy was also born in NC, but I have also seen her birth place as VA.
In the 1850 census of Smyth County, there were several Powers men and woman. Ann Powers (1790, NC), John B. Powers (1811, VA), Harvey Powers (1812, VA), William Powers (1813, ?), Nancy Powers (1818, NC or VA), Rachel Powers (1825, VA), William H. Powers (1831, VA), Ezra J. Powers (1836, VA) and Caroline Powers (1837, VA). We know that Nancy, Rachel, Caroline, William H. and Ezra all belonged together, but who is the William H., John B. and Harvey Powers?