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Welcome to the O'Hourihane DNA Project website, which was created in August 2012 to support the O'Hourihane DNA Projects. The project aggregates Y-DNA and Autosomal DNA (A-DNA) tests of participants and analyzes them for relationships. Y-DNA test takers must be in the direct paternal line of descent from a male ancestor with a surname of interest. A-DNA test takers must be descended from any surname of interest ancestor, regardless of which line.

Were the O'Hourihanes erenaghs of Ross? Was the name ever anglicized as Horan? Were they secretly Horgans? Or were they Hanrahans who migrated down from Tipperary? Visit the Project Background and Project Goals pages for more details on what we aim to cover. There are many surnames to examine, not just O'Hourihane. See the sample surname distribution map below. Specifically, we want to differentiate between the Galway-based O'Horan group, the Tipperary-based O'Hanrahan group, and Cork-based O'Horgan, where such distinctions exist. Variants for these three surname groups have been confused for each other. The areas of geographic interest are Cork, Kerry, Tipperary, Limerick, and Galway, but may spread to other counties. A major goal of this project is to bring some DNA clarity to these names.

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Based on an earlier work at Wikimedia Commons, and reused under the terms of the GNU Free Documentation License.

Susan J. Barretta, Project Administrator

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Last updated: Friday, 10-May-2013 18:59:22 MDT