Elisha Cobb, Sr - Proof of a third wife?

per https://www.findagrave.com/memorial/70785301/elisha-cobb
3 Spouses:

1 Sarah Braman Cobb 1758–1796 (m. 1782)
2 Mrs Polly Cheever Breck 1775–1837 (m. 1797)
3 Melinda Godfrey Fish Cobb 1766–1842 (m. 1800)

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marriage records added (links from Ancestry) but I don't see Polly yet.

Thank you.

He would have had to be divorced from Polly Cobb Breck for her to be his second wife because both she and Melinda "Lynda" Fish Cobb Stone outlived him.
He outlived his first wife Sarah Cobb

FaG has him as father of Mary “Polly” Cobb Thomas born 1798