Thanks for the information. I think I've identified Sarah McVeagh's parents. Major John McVeagh and Margaret Lincoln. I searched through all the census records in Chester county PA for McVeagh's and they lived close to the Wagensellers and they had a son who married Simon Cameron's daughter and John Neilor was his secretary for a time. So I have no doubt that the families knew each other. There is a possibility that a Nathan McVeagh could be her father because there is a census record with a girl living with him who's the right age, but it lists no other girls that age and I know she had a sister Rebecca. Major John and Margaret McVeagh also had a daughter Rebecca. Of course I have nothing to say that she didn't come from a McVeagh family living elsewhere, but even if that is the case I would be flabbergasted to learn that she wasn't related to the Major John and Margaret McVeagh family at the very least. If anyone has any information either confirming or refuting this relationship I would love to hear from them.