I have two Nannie Abbotts in Pittsylvania County but think the 1st one might be your Nannie Willis.
The first one is a Nannie Abbott who was born c1862 to William H Abbott(c1819-1900) and Nancy Weatherford(Mar 1823[VA]-aft 1900. They were married on 25 Nov 1839 in Pittsylvania Co, VA.
William & Nancy had 10 children: Louisa(Mar 1842[VA]-aft 1900) m. David R Neal(Feb 1843[VA]- unk) on 12 Jul 1869 in Pittsylvania Co, VA. -- NFI Patience(c1846-unk) -- NFI John(c1849-unk) -- NFI Bettie(c1852-unk) -- NFI Temperance J(Jun 1853[VA}-unk) -- NFI Martha(21 Aug 1855[Pittsylvania Co, VA]-unk) -- NFI Martha(16 Jul 1858-unk) m. James R Hodnett(c1860-unk) on 05 Jan 1882 in Pittsylvania Co, VA -- NFI Chines H(c1859-Jan 1862[Pittsylvania Co, VA]) -- NFI Nannie Virginia M(c1868-01 Oct 1877[Pittsylvania Co, VA) --NFI
William Jr was the son of Willia H Abbott Sr and Temperance Owens. William Sr was the son of Jesse Abbott and Sarah Stokes.If you want more info, you can contact me directly.