We have four distinct groups in the O'Shea yDNA Project:

• We have established a main Kerry Group of yDNA results for O'Sheas.
• We have a group of O'Sheas with Tipperary/Kilkenny origins which has different yDNA results to the other groups. Some of these have a value of 12 at DYS392 which splits the group into two.
• We have an extended family of O'Sheas from the Macroom-Millstreet area of Co. Cork
• We have other set of results which define other sub-groups

All of these groups have very different yDNA results from each other and are not connected for thousands of years. SNP testing, especially results from the Big Y-700 have confirmed this.

The main Kerry Group is R-BY402

The Kilkenny Group is R-Z18128

The NW Co. Cork Group is R-BY17693

Many members have tested to 111 markers and a growing number have done the Big Y-700.

Please look at our results webpage at Family Tree DNA. Our O'Shea blog is at http://oshea.wordpress.com

[updated Jan. 2023]