Sports Minister Edwin Poots became the first DUP politician to attend a Gaelic football match in an official capacity at Pairc Esler, Newry, on Wednesday.
He was at the McKenna Cup game between Down and Donegal.
Mr Poots was welcomed by GAA president Nickey Brennan, director general Liam Mulvihill and Ulster Council president Tom Daly.
The invitation to attend a GAA fixture had been accepted when Mr Poots spoke at a GAA conference in October.
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"This is a landmark occasion in the further development of community relations on the island of Ireland when a Unionist Minister is prepared to attend one of our games," said president Brennan.
"For me this highlights the good standing of the Ulster Council who I know have developed an exceptionally positive relationship with Mr Poots.
"I am absolutely enthused that the Minister has been so receptive to the role and relevance of the GAA in Ulster and the contribution it makes to sport and communities.
"I wish to acknowledge the genuine commitment and professionalism of Edwin Poots in assisting the GAA with our development programmes in Ulster.
"I look forward to him taking up my invitation to attend Croke Park for an event in the near future."