Family:Hugh Cunningham and Sarah McKee (1)

What is the source please for Sarah McKee as Hugh Cunningham's wife? Note that the Sarah mentioned as Hugh's wife in his 1772 will was not his first wife and was not the mother of his children (see reference in will to stepson James Davis). Hugh's first wife was killed at the Second Kerr's Creek Massacre per his 19 Jan. 1764 petition to the Virginia House of Burgesses.

1.   What is the source please for Sarah McKee as Hugh Cunningham's wife? Note that the Sarah mentioned as Hugh's wife in his 1772 will was not his first wife and probably not the mother of his children (see reference in will to stepson James Davis). Hugh's first wife was killed at the Second Kerr's Creek Massacre per his 19 Jan. 1764 petition to the Virginia House of Burgesses. Are there documents establishing that her name was also Sarah?