This is from my own family notes.but it may be the one you're looking for. I have never gone into this branch as they would be distant distant cousins. I have a Martha Evans born 1816, the daughter of Benjamin Evans and Mary Winphrey.
Benjamin is the son of Thomas born abt 1750 in Goochland VA. Thomas is the son of Joseph and Susannah Lacy.
Mary Winphrey is the daughter of Philip Winfrey and Martha Northcutt.
The 1860 census for James Withers has an elderly Mary Evans living with the family, SO, fingers crossed.