Funny you mansion that. The Tottenham/Southampton game had a bit of a surprise earlier today. At about the 80's minute Southampton subbed in an Irish 17 year old - and he was Black - so yes it is possible that O'bama was black Irish
Actually, according to The New Yorker magazine, a man from Moneygal Ireland, named Falmouth Kearney, was Obama's great, great, great, pretty-good, great-grandfather.