From McCarthy Surname study FTDNA Yes you are definitely Irish Type II. The mutations I highlighted are based on an Irish Type II background. The defining Irish Type II progenitor lived some time in the first millenium A.D. So all Irish Type II people will have mutations which occurred since then, defining their sub-branches.
I'm so glad that you have had a successful outcome in contacting Cummings. As I said previously, " I agree it only needed a generation to omit the "r" in O'Croimin (or
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