A very interesting article "The Will of Abraham Wood Analyzed" by Allen Cabaniss, University Research Professor of History at the University of Mississippi, in "The Colonial Genealogist" Vol 4, No. 1, 1771.
The author's conclusion after a lengthy analysis:
"....the unsupported evidence of this fragment is too fragile to be definitive in proving or disproving anything. Margaret may or may not have been Wood's daughter by blood and her children may or may not have been his grandchildren by blood. But this document (the Will of Abraham Wood) is not sufficient to warrant positive assertion one way or another."