Significant Rh- frequency variants within the island of Ireland

Here is the regional frequency map from the study.

Only around 17% of Ireland is Rh negative

Noteworthy:

The northwestern region with more than 98% R1b frequencies is also high in Rh- blood.

Strange:

Northern Ireland shows with less than 15% while recent studies show more than 27%.

The region that is now Northern Ireland was long inhabited by native Gaels.

Are you Irish and Rh-?

It was made up of several Gaelic kingdoms and territories and was part of the province of Ulster. In 1169, Ireland was invaded by a coalition of forces under the command of the English crown that quickly overran and occupied most of the island, beginning 800 years of foreign central authority.

See also:

How Rh negative are the Irish?

Back to this:

7 Regions with more than 20% Rh Negatives