Jacobus, Donald Lines & George Dudley Seymour, 1939. A History of the Seymour Family: Descendants of Richard Seymour of Hartford, Connecticut for Six Generations. Tuttle, Morehouse & Taylor Company, New Haven, Connecticut. page 61
It may be possible to confirm family relationships with Samuel 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