Based on the evidence in these two studies:

https://journals.plos.org/plosgeneti...l.pgen.1007152
https://www.nature.com/articles/s41598-017-17124-4

It would appear to me something like this:


MOST: Northern Irish Protestants
Southern Leinster: Wexford, Kilkenny, Wicklow, etc.
Dublin
Rest of Leinster: Meath, Louth, Kildare, Westmeath, etc.
Connacht: Galway, Mayo, Roscommon, Leitrim, Sligo
Northern Munster: Waterford, Tipperary, Clare, Limerick
Ulster Catholics
LEAST: South Munster: Cork, Kerry

Does everyone more or less agree with this?