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Home: Surnames: Dawsey Family Genealogy Forum

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Dorsey/Darsey/D'Arcy/Dossey/Dorcey/Dawsey DNA Project Results
Posted by: Nancy Custer (ID *****4125) Date: September 30, 2004 at 21:54:07
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It was a long time coming but there is now a major update to the Dorsey/Darsey/D'Arcy/Dossey/Dorcey/Dawsey/etc DNA Project. We currently have all results from all participants and are actively recruiting more. We hope the success of Phase I of this project will inspire more Dorsey/Darsey/D'Arcy/Dossey/Dorcey/Dawsey/etc males to join us.

Though small in comparison to some surname projects, we are fortunate to have well documented members from several Dorsey/Darsey/D'Arcy/Dorcey/Dossey
lines that have been the subjects of much interest, discussion, and argument by genealogists both past and present--the line of the American Immigrant Edward Darcy/Dorsey, the line of Norman D'Areci who is said to have accompanied William the Conqueror to England in 1066, and the line of the Irish D'Arcys of Kiltullagh are all represented along with several other newly identified groups.

We do not at this time have any Dawsey participant though would be delighted to have them join us. We are particularly hoping to have descendents of Cornelius Dawsey of South Carolina join us as there are some hints they are connected to some of the Dorseys with roots in Maryland.

Because of its length and complexity, I have converted the full report, including data, discussion and relevant genealogical citations, to an Adobe Acrobat file with detailed bookmarks to allow the reader to navigate back and forth between sections quickly and easily. (Click on the Bookmark tab at the left of the page after opening to file to access this feature.)

If you do not have the Adobe Acrobat reader, you can download and install it free of charge at If you cannot read the Adobe file, please let me know and I can send you the report as a Microsoft Word file or as an RTF file.

The major findings of the Dorsey DNA Project are:

The matching haplotypes of the five descendents of the three sons of Edward Darcy/Dorsey, all but one well documented and all widely separated by time and geography, leave little doubt that their DNA represents that of Edward Darcy/Dorsey.

Similarly several D'Arcy/Darsey individuals, with documented genealogies also widely separated by time and place, present matching haplotypes that most likely represent the Y chromosome DNA profile of Norman d'Areci who is said to have come to England with William the Conqueror in 1066.

The STR haplotypes of the descendents of the Immigrant Edward Darcy/Dorsey do not match the D'Arcys with traditionally proven lines to the Norman D'Arcys and the first Baron John D'Arcy of Knayth who was the ancestor of the Dorseys of Hornby Castle, Yorkshire--often claimed as the ancestors of Edward Darcy/Dorsey.

Several other lines have also emerged from this study. The lines of Andrew Dorsey and Elias Dossey share origins in North Carolina and possibly Maryland but match neither each other nor the Edward Dorsey/Darcy line nor the Norman D'Arcy line. One pair of participants with origins in Tipperary appears to have an as yet unidentified common ancestor.

These conclusions are explained in detail in the report.

There are others who are as yet unmatched within the project. We are actively recruiting more participants. At this time, we have enough data to determine whether new participants are descendents of Edward Darcy/Dorsey, the Norman D'Arcys (and, with that group, at least some of the Eastern Maryland Dorseys), Andrew Dorsey, or Elias Dorsey. If you are a male with the surname Dorsey/D'Arcy//Darcy/Dossey/Dorcey or any variant spelling, you can sign up by going to and ordering the 25 marker test today.

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