Who Was Franky's Father? Part 1: A Marriage Record

Virginian Willoughby Randolph (1765-1822) mentions his wife, Franky, twice in his will. On many Ancestry trees, Franky's maiden name is listed as Thornton and her father's name as William Thornton. But, I have not found anyone who documents these relationships.

Willoughby and Franky's first child, William Randolph (my 4th great grandfather), was born on 4 November 1792 in Virginia. Willoughby and Franky were likely married around 1792.

Ancestry.com > Virginia, Wills and Probate Records, 1652-1983 > Princess
Anne County > Index to Wills and Marriages, 1754-1799 > image 2192,
1791 marriage of Willoughby Randolph and Frankey Cummings.

I found this card stating that Willoughby Randolph and Frankey Cummings had married on 28 December 1791 in Princess Anne, Virginia. Based on date and place, this appears to be the correct couple. But, Frankey's surname says Cummings, not Thornton. If the other trees are correct, was Frankey previously married?

Wingo, Elizabeth B., Marriages of Princess Anne County, Virginia : [1749-1821]
(Norfolk, Virginia: E. B. Wingo publisher, 1961, 84; digital image, Internet
Archive (https://www.archive.org : accessed 16 Marcy 2018).

Last night I came across another record. This is a marriage index, so I will try to get the original. But, it quite clearly states that Frankey Cummings was the daughter of William Thornton "who consents for her." Apparently this was Frankey's second marriage. Martin Cummings, listed as a surety for the marriage, was likely a relative of Frankey's previous husband.

There is only one Willoughby Randolph listed in the 1800 U.S. census. This "Willobough" Randoph was enumerated in Surry County, North Carolina, which is very close to Lee County, Virginia where Willoughby is living a few years later. Therefore, I conclude that Willoughby Randolph's wife, Frankey, was the daughter of William Thornton.