The mystery and riddle of the relationship of Susannah Wood (dau. of Richard Wood), John Adams and David Halliburton has finally been solved. The problem was caused by a 1762 deed [Brunswick DB 7, pp. 159-161] in which David "Ally Burton" [Halliburton] was named as the husband of Susannah Wood:
"...and by the said Richard Wood by his last will and Testament Bequeathed to his Daughter Susanah Wood and by the said Susanah Wood her Husband David Ally Burton..."
The solution to the mystery is found in the details of four records, and particularly the metes and bounds description of the 200-acre tract bequeathed by Richard Wood to his daughter Susannah in his 28 April - 4 September 1746 will:
1) The actual will of Richard Wood [Brunswick Will Book 2, pp. 122-123] 2) The actual patent issued to Richard Wood 20 Aug 1747 (after his death) [Patent Book 28, p. 195] 3) The original deed from John Adams to Charles Humphreys dated [Brunswick DB 6, pp. 360-361], and 4) The original deed from Charles Humphreys to Thomas Cadet Young dated 24 May 1762 [Brunswick DB 7, pp. 159-161]
The metes and bounds of the 200-acre land grant in records #2 through 4, above, are identially the same, meaning that Richard Wood bequeathed his not-yet-final patent to his daughter Susannah in 1746, which patent was finalized in 1747. In 1758 John Adams sold the same land to Charles Humphreys, and in 1762 Charles Humphries sold the same land to Thomas Cadet Young.
Despite the fact that the 1762 deed named David Halliburton as the husband of Susannah Wood, the 1758 deed from John Adams to Charles Humphreys strongly suggests that the only way that John Adams could have been the legal owner of the 200-acre tract was if he was the one who married Susannah Wood! The "incidental" naming of David Halliburton as the husband of Susannah Wood in the 1762 deed then appears to have been an error on the part of the person who drafted the 1762 deed. As it turns out, David Halliburton (who married Amey Humphreys) was the (step-) brother-in-law of John Adams, so it really was "all in the family."
Hope that explanation is just a little bit clearer than mud...