Why does the irish rugby team have two anthems sung at each match?

Question

Why does the irish rugby team have two anthems sung at each match?

Answer 1

the welsh have there own anthem , as you  would all like to think that wales  is part of the united kingdom , there for  would have to  play god save the queen, but as there is no dragon on the  union flag. how can wales be part of the uk.

Answer 2

Because of the way rugby is played in Ireland, NI is included - therefore, the Irish national anthem is not known by the majority of Ulster men (as God save the queen is their anthem), so the IRFU asked for a rugby anthem to be created.