Colonial Families of the USA, 1607-1775

Validator (claude-sonnet-5-5, 2026-10-28): consistent, confidence 2/4, tier compiled.
The page is the Gesner entry in a compiled family book. It mentions "John Seymour, b. 1666, d. 1748" as the husband of Elizabeth Webster and father of Margaret Seymour. This agrees with the claimed years 1666–1748. It does not state the date of 12 June or the place Hartford, so it is consistent with the claim but does not fully support it.
Matches: The page names John Seymour, b. 1666, d. 1748, as father of Margaret Seymour, with wife Elizabeth Webster.; The birth and death years match the person in the claim (1666–1748).
Limits: The record gives only the birth year 1666, not the day and month (12 June).; The record gives no birthplace, so Hartford, Conn is not shown.; This is a compiled genealogy (Gesner family entry in Colonial Families of the USA), not an original record.; John Seymour appears only as an ancestor in a lineage passage and is not the subject of the entry.