BrewerSEA

So off topic, but I can't help but to clarify this...

Between 1922 and 1999 if you were born in Northern Ireland you were entitled to Irish citizenship, but did not automatically become a citizen unless one of your parents was an Irish citizen at the time of your birth.

From 1999 to 2005 if you were born in Northern Ireland you were entitled to Irish citizenship and automatically became a citizen if you were not entitled to the citizenship of any other country.

From 2005 to present if you were born in Northern Ireland you were entitled to Irish citizenship if one of your parents was an Irish or a British citizen, a legal permanent resident of either Ireland or Northern Ireland, or a legal resident of Ireland or Northern Ireland during 3 out of the 4 years preceding your birth. Also, you automatically became a citizen if you were not entitled to the citizenship of any other country.

For an entitled person to become a citizen, all that one must do is an act that only Irish citizens may do. For example, any entitled person becomes an Irish citizen if they or someone on their behalf (for children, basically) applies for an Irish passport.