The Chumash of Santa Rosa Island

On Santa Rosa Island, off the California coast, the Chumash built tomol plank canoes and traded across the channel in shell-bead money, masters of a maritime world. Genomes revealed continuity between the Northern Channel Islands and the Santa Barbara mainland from 7,400 years ago down to the Chumash of two centuries ago, with one great change: a northward migration of ancestry related to Northwest Mexico by 5,200 years ago, a candidate for the spread of Uto-Aztecan languages. The five people here were buried at Skull Gulch in the fourteenth century. They were studied with the permission of Manuel Armenta, elder of the Santa Ynez Band of Chumash Indians and NAGPRA representative, and their remains were repatriated and reburied.

The genome-wide data behind this entry was published in Genetic continuity and change among the Indigenous peoples of California.

Every Ancestry Map includes the free Notable Matches lens: your coordinates are compared to every sequenced member of every catalog entry, and the distance to the closest member is reported, a Euclidean distance in the same 25-dimensional space the Distance lens uses. Because these are a small group of real individuals, not a population average, distances naturally run larger than population distances. That is expected, not a poor result. And one thing is never claimed: a small distance means similar ancestry composition, not that the Chumash of Santa Rosa Island are your ancestor. See how it looks in the live demo or read about Ancestry Map, the full Global25 report.

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  Who were the Chumash of Santa Rosa Island?

  The Chumash of Santa Rosa Island (c. 1250-1450 CE, Santa Rosa Island, Northern Channel Islands, California, USA) are one of the Iconic discoveries entries in our Notable Matches catalog, represented by 5 sequenced ancient genomes published in the study "Genetic continuity and change among the Indigenous peoples of California".

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  What does "matching" the Chumash of Santa Rosa Island mean?

  Your Global25 coordinates are compared to the entry's sequenced members and the distance to the closest one is reported, a Euclidean distance in the same 25-dimensional reference space the Distance lens uses. A notable entry is one person or one small burial group, not a population average, so distances naturally run larger than population distances.

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  Are they my ancestor?

  No, and no DNA test can show that. A small distance means your genome sits near theirs in a shared reference space: similar ancestry composition, not descent. Ancestrify never claims a notable individual is your ancestor or relative.

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  How do I see my own distance to the Chumash of Santa Rosa Island?

  Notable Matches is a free lens on every Ancestry Map, never sold separately. Order Ancestry Map, our Global25 analysis (29.99 EUR), and your report ranks your coordinates against the full catalog, with a portrait, dossier and map for every entry. The public demo shows the lens with example data.

The catalog holds every published entry across three tiers. Browse the full Notable Matches directory. Nearby entries:

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