The latest analysis of the O'Shea yDNA Project results are in the "O'Shea yDNA Groupings" file below. There is also information, charts and diagrams to help with the understanding the spreadsheet of results. We welcome enquiries regarding the project and look forward to continuing to increase participation.

O'Shea yDNA Groupings (Excel Spreadsheet) updated 30th May 2008. UPDATED !!!

Modal Values for O'Shea yDNA Groups (Excel Spreadsheet) updated 30th May 2008

Explanation of the above yDNA Groupings table. It is hoped eventually to identify the different branches and also the origins and migration of the O'Shea Clan. Explanation of Groupings in O'Shea yDNA Project (pdf format) updated on 30th May 20008 and based on 37 markers.

O'Shea Network Diagram (for groups 1-4, based on 37marker results) updated 30th May 2008

Results Page for O'Shea yDNA Surname Project at the Family Tree DNA (FTDNA) website.

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When that paper trail fizzles out or hit a brick wall, what can you do?

DNA is now becoming more significant in genealogical research. While the paper work is still a vital part of the research, another tool is DNA. There is an O'Shea yDNA Surname Project underway.

All O'Shea [and variant surnames] men [as only men have yDNA] are welcome to represent their O'Shea family and join the O'Shea yDNA Surname Project. This project hopes to help people with their genealogical research and to establish the history of the O'Shea Clan. We may be able to find to which branch each of us is closest e.g. Dingle, Iveragh, Kilkenny, Cork, Tipperary etc. with enough participants in this project. The testing company used for the project is: Family Tree DNA, based in Texas, USA.

The O'Shea yDNA Surname Project suggests doing the 37 marker test as a minimum. Upgrades to 67 markers can be done if a close match is found and it is suspected that there is a very short time to a common ancestor.

Note the yDNA Groupings Chart (above) now includes one O'Shea who tested with a company other than FTDNA. We would like to hear from others who may have tested with companies other than FTDNA. We can include you on our own results charts

See O'Shea yDNA Surname Project for details. The order form is available online and you can order the kit, do the simple mouth swab at home and then mail it back, pay the fee and wait for the results to be emailed to you a few weeks later. Here is a link to a good description of how the swap is taken. DNA Collection Method


O'Shea Clan committee member, Brian O'Shea (left in picture), presents yDNA certificate to recent O'Shea Project participant

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Family Tree DNA Analysis of yDNA Results
An analysis of the 25 marker matches is provided by FTDNA for 25 markers: 25 marker matches.
An analysis of 37 marker matches is provided by FTDNA for 37 markers: 37 marker matches.
An analysis of 67 marker matches is provided by FTDNA for 37 markers: 67 marker matches.
A tutorial on understanding the results is at Tutorial on Understanding the yDNA results from FTDNA

The yDNA results can be compared to others atYSearch. YSearch is very useful, so make sure you upload your results to it to compare results with others. This is particularly interesting to see how your results compare with people in your yDNA Project and others who are not in your own project or who are using a different testing company.

Trinity College Research into Irish DNA

In Ireland, most of the research into patrilineal DNA (y-chromosome DNA) is being carried out at Trinity College, Dublin, Ireland. Trinity's research website is: Trinity College Genetics , this is where the titles and authors of the papers are listed. Also some of the data used is available there. However, to read the actual papers, you have to look further.

Other Sources for Information on DNA

The Clans of Ireland at Clans of Ireland website lists many of the DNA research papers relating to Ireland. The American Journal of Human Genetics at: American Journal of Human Genetics is one magazine where some of the papers are electronically published. Also "Human Genetics" publishes articles on all aspects of human genetics Human Genetics magazine . The haplotype for "Niall of the Nine Hostages" as described by the Trinity researchers in a published paper, may be found at FTDNA at Niall of the Nine Hostages

Other sites dealing with genetic genealogy include:
FTDNA DNA Forum which is the Family Tree DNA Forum.
Kerchner's DNA Resource Page is very informative.
Genealogy DNA Forum
The International Society of Genetic Genealogy where there is a message group and some resources.
Irish-DNA An Irish DNA Message Board
Genealogy-DNA, a searchable list of messages dealing with DNA

Genographic Project

There is a global Genetic Genealogy Project being carried out by National Geographic, see The Genographic Project for details. You can upload your Family tree yDNA results to this Global Project or vice versa.

All in all it is an exciting time for Genetic Genealogy!