I have got a Isaiah Standifer and a Mary Ann Jones in my family tree line. I hope it is the one you are looking for. He was born 4-8-1835 in Virg. his wife was born 5-27-1837 in Tenn. He died on 10-25-1916 Merit Collins county Tex. He is Buried in Bethelheem Church Cemetery Farmerville, Tx. His wife died 9-16-1894 and is Buried in the same Cemerty.E-Mail Me if you think this is the person you are looking for I do have some more info.