To what William Dunbar Gross are your referring? The William Dunbar Gross in my mother's line was born in 1820, so he could not possibly be the father of the Nancy Gross who married Charles Stewart. He married Roxan Miles in 1846 and Margaret Moore Simmons sometime after 1870. His daughter Nancy Missouri Gross married John Frankln Simmons. If there is another William Dunbar Gross, we'd love to know it.