Welcome to the web-site of the Clan Irwin Surname DNA Study.  This Study was launched in 2005, with the assistance of Kent Irvin, and its website was re-vamped in 2011 with the assistance of Rick Byers. 

This Study and its website are fully independent from the Clan Irwin Association, although the Study continues its support of the Association and to recognise that the interests and memberships of the Study and of the Association have considerable overlap.


This is Update No.27 of our Study.  Highlights include:

  • We now have over 500 participants with STR test results, of whom 46 have BigY test results and a further 84 have SNP Pack Test results. 

  • We have identified 44 branches of the surname ("genetic families") which are unrelated to one another during the surname era but whose members use the Irwin surname or variant spellings thereof.

  • Our largest branch, the Border Irwins, has 330 participants, of whom 55% can now be included in the L555 haplotree.

  • This haplotree has been enhanced considerably by the test results of 23 participants who have taken or upgraded to BigY700.

  • The remainder of our Border Irwins who are not yet on this haplotree are recommended to consider taking the L555 SNP Pack test at $119 or the BigY700 test at the current sale price of $399. 

  • 96% of our participants have opted to share their results in public.

  • Our Study remains amongst the leaders in the rapidly evolving field of Surname DNA projects, particularly in its ability to connect the human haplotree to conventional pedigrees. 

In October I attended GGI 2019 in Dublin and RootsTech 2019 in London, enabling me to keep our Study abreast of developments in genetic genealogy.    

                            James M Irvine,  Surrey,  UK;

 Study Administrator;

3 November 2019;