Ezra was the son of Thomas & Elizabeth (Unknown) Seymour
He married Abigail Waterbury, daughter of Nathaniel & Rebecca (Holly) Waterbury, on 23 Nov 1769 at Norwalk, Fairfield, CT - their children were Hannah, Nancy, Ezra II, Henry, Betty, Rebecca, Levina, Holly & sybil
It may be possible to confirm family relationships with Ezra by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree:
Denny Seymour :
Family Tree DNA Y-DNA Test 111 markers, haplogroup R-BY3298, FTDNA kit #108347 +
Y-Chromosome Test 419 markers, haplogroup R-Y20344