Genetic map of the people of Ireland

Over six years ago, during my first year as IGSI blogger, I posted about a unique DNA study undertaken by the Royal College of Surgeons in Ireland (RCSI) and the Genealogical Society of Ireland.

Here’s what I wrote back then:

My interest in DNA was piqued by a recent announcement by the Genealogical Society of Ireland and the Royal College of Surgeons in Ireland. They are cooperating in an all-Ireland project to create a collection of DNA samples for individuals of Irish extraction.  Their project has both genealogic and genetic goals: 1) to further knowledge of the population history of Ireland and its relationship to other European populations, and 2) to increase understanding about how genes affect health in Ireland.

Late last week researchers published findings about the “Irish DNA Atlas.” Their study involved the collection of DNA from individuals who could prove that their eight great-grandparents had been born within 50 km of each other.  In a nutshell, the results show geographic clusters within Ireland: seven of ‘Gaelic’ Irish ancestry and three of shared British-Irish ancestry.

Key findings, with links to the full report, can be found at the RCSI website.

The study is ongoing. If you have ancestry from a specific part of Ireland and are interested in participating, you’ll want to read closely.

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