693 documented Duncan ancestors, drawn from public records such as death indexes and county histories. Every name below is a real person in the public record.
Scottish, from the Gaelic personal name Donnchadh — 'brown warrior.'
Where the records place them: Iowa (98%), out of 689 Duncan records with a known place.
The most common first names among them: James, John, William, Robert and Mary.
Of the 679 with both a birth and a death year, the median lifespan was 77 years.
The earliest recorded birth is Mary Polly Duncan, born 1774 in North Carolina.
Documented Duncan families on this page come from Biographical Record of Miami County, Ohio, Portrait and biographical album of Washington County, Iowa and Portrait and Biographical Record of Portage County, Ohio.
Real Duncan 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.
+5 more documented Duncan families in the record. Find yours →
Deceased Duncan ancestors, earliest first. Living family members are deliberately omitted.
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Scottish, from the Gaelic personal name Donnchadh — 'brown warrior.'
The documented line here reaches back to 1774. Most Duncan lines can be traced to the end of the surviving public record.
No. Deceased ancestors only, from public records. Living people are excluded for privacy.
If a name here matches your family, it may well be. A full documented build confirms exactly how your line connects.
Part of a network of documented family histories: