Y-DNA of a Scots-Irish Diaspora (James Irvine)

I want to show local genealogists who may be unfamiliar with DNA testing how much their surname studies may benefit from this rapidly evolving aid. Surname DNA projects have moved on from the gimmicks of ethnicity and “fishing for cousins” to become a sophisticated tool for confirming and extending paternal ancestral lines and exploring the origins and development of surnames. With its large size and wide diaspora the Irwins show that many and varied lessons can be learnt from such projects. Many of these lessons can be adapted to other surnames using DNA data that is already posted on-line but has not been exploited. I explore the strengths and weaknesses of y-STR testing and issues arising in cost-effective selection of the many single y-SNP tests, SNP Pack/panel tests and NGS tests now available. With a combination of diligence, intuition, peer guidance, genealogical awareness and luck rather than a sophisticated knowledge of biology or mathematics I show that 37 STR markers are often quite sufficient to identify genetic families/surname branches, and one or two SNP Panel tests can be a very cost-effective follow-up to take many testees to near the forefront of this exciting application of citizen science. This lecture was presented at Genetic Genealogy Ireland 2018 Belfast. Please note that these GGI videos are copyrighted to the presenter and should only be used for personal study. They are not to be used for any other purpose without the presenter's express permission. Also, please note that because this is a rapidly advancing field, the content may quickly become outdated. The lectures were sponsored by FamilyTreeDNA (at www.ftdna.com) and organised by Maurice Gleeson, Education Ambassador, ISOGG (International Society of Genetic Genealogy at www.isogg.org). ISOGG volunteers provided free DNA advice and support for members of the public at the conference.