2,936 documented Thomas ancestors, drawn from public records such as death indexes and county histories. Every name below is a real person in the public record.
2,936Documented ancestors
1821Earliest record
8Generations
The name
The Thomas name in the record
Where the records place them: Iowa (99%), out of 2,923 Thomas records with a known place.
The most common first names among them: Mary, John, Robert, William and Charles.
Of the 2,909 with both a birth and a death year, the median lifespan was 77 years.
The earliest recorded birth is John Thomas, born 1821 in North Carolina.
Documented Thomas families on this page come from History of Monona County, Iowa, Biographical Record of Champaign County, Ohio and Biographical history of Shelby and Audubon counties, Iowa.
Documented families
Thomas families we’ve reconstructed
Real Thomas family groups pieced together from the public record — parents, spouse, and children, each with the source that proves it. Recognize your line? Tap a family and we’ll start your documented tree from it.
Found your Thomas? We trace the whole line — both sides, back to the documented wall — into a written book & interactive family site. No DNA test; a free call before you spend a dollar.
Common questions
Thomas genealogy — FAQ
Where were Thomas ancestors recorded?
Where the records place them: Iowa (99%), out of 2,923 Thomas records with a known place.
How far back does the Thomas family tree go?
The documented line here reaches back to 1821. Most Thomas lines can be traced to the end of the surviving public record.
Are living Thomas family members listed here?
No. Deceased ancestors only, from public records. Living people are excluded for privacy.
Is this my Thomas family?
If a name here matches your family, it may well be. A full documented build confirms exactly how your line connects.