In case you need it, I have seen this pairing in both a Geni profile and among Ancestry online sources:
For Susannah Jackson (1793-1868):
Garnett Jackson Sr of Russell County - b. 1785
Nancy Salyer b. 1771 d. 1852
I didn't pull Daniel Reasor (b. 1782), as he is only husband of a distant cousin. I might at some later date if I have time to come back to it.