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My guess, based on y-dna maps showing Germanic y-dna (see here: https://i.imgur.com/ntr8Zyb.jpg) and that we know from the Insular Celtic paper that Ulster and Leinster have the most, it should be...
Leinster: Dublin, Wicklow, Wexford, Kilkenny, Carlow, Kildare, Meath, Louth
Ulster: Antrim, Down, Armagh, Derry, Tyrone
Do these make sense?
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