I did a search...turns out there is only 1 member of Team Ireland competeing in the Olympics this time around...and he's not a native Irishman, he became a citizen based on his Irish heritige, Allistar Ian Cragg
From his official Olympic Bio: Born June 13, 1980. ... Making his second appearance in the Olympics. ... At the 2004 Olympics in Athens, ran the 5,000 meters in 13 minutes, 43.06 seconds for a 12th-place finish. ... It was the top time among Europeans in that event. ... Broke an Irish record in the 10,000m, finishing in 27:39.55 in Stanford, Calif. on April 29, 2007. ... Finished fourth in the 3,000 at the 2006 World Indoor Championships in Moscow with a time of 7:46.43. ... Took gold in that event at the 2005 European Indoor Championship in Madrid with a time of 7:46.32. ... After representing South Africa as a junior athlete, was able to become an Irish citizen in 2003 because of his ancestry.
Wonder how our young friend feels about being represented by a former "Plastic Paddy"