Question: What nationality is Breon O'Casey's father?

Knowledge 1: Breon O'Casey
Breon O'Casey (30 April 1928 – 22 May 2011), the son of actress Eileen, née Reynolds, and playwright Seán O'Casey.He was London-born and later lived and worked in Cornwall, initially in the artists’ colony of St Ives.Breon was educated at Dartington Hall School in Devon and, following his national service duty, O'Casey attended the Anglo-French Art School, a small school in St John's Wood, London, based on the French model.He was an apprentice to Denis Mitchell and Dame Barbara Hepworth, which informed his own later career.In St Ives too, he began making jewelry as a side line, although his main occupation was always painting.He continued making jewellery until he was 70 years old. [SEP] Knowledge 2: Seán O'Casey
Seán O'Casey (born John Casey; 30 March 1880 – 18 September 1964) was an Irish dramatist and memoirist.A committed socialist, he was the first Irish playwright of note to write about the Dublin working classes.
Knowledge 1: Breon O'Casey
Breon O'Casey (30 April 1928 – 22 May 2011), the son of actress Eileen, née Reynolds, and playwright Seán O'Casey.He was London-born and later lived and worked in Cornwall, initially in the artists’ colony of St Ives.Breon was educated at Dartington Hall School in Devon and, following his national service duty, O'Casey attended the Anglo-French Art School, a small school in St John's Wood, London, based on the French model.He was an apprentice to Denis Mitchell and Dame Barbara Hepworth, which informed his own later career.In St Ives too, he began making jewelry as a side line, although his main occupation was always painting.He continued making jewellery until he was 70 years old. [SEP] Knowledge 2: Paul Casey (Gaelic footballer)
Paul Casey( born 14 October 1981) is an Irish Gaelic footballer who played for Dublin and currently plays his club football for Lucan Sarsfields.He is a wing- back.He captained Dublin during their Leinster Minor Football victory in 1999 and also won an under 21 medal in 2002.He made his league debut for Dublin in 2002 against Offaly.Casey's father was a Munster Minor Football Championship winner with Kerry in 1968.Paul has won seven Leinster Senior Football Championship medals with Dublin in 2002, 2005, 2006, 2007, 2009, 2011 and 2012, four as a starter and three as a panelist.He won a 2006 Sigerson Cup medal with DCU with a win over Queens University Belfast and was vice captain on this winning team.Captain was current Dublin team mate Bryan Cullen.Paul also won a Leinster minor medal in 1999, and an Under 21 Leinster medal in 2002.Paul was on Dublin's winning team for the 2008 O'Byrne Cup winning team which defeated Longford in the final.Paul Casey was on the Leinster and all- Ireland winning panel for Dublin in 2011.He made his championship debut for Dublin in 2002 against Carlow in the Leinster Championship at Dr Cullen Park, Alan Brogan and Barry Cahill also made their debut the same day.He retired from inter county football in October 2012.He got engaged to long term girlfriend the following month November 2012.They plan on getting married the end of 2013.
Knowledge 1: Breon O'Casey
Breon O'Casey (30 April 1928 – 22 May 2011), the son of actress Eileen, née Reynolds, and playwright Seán O'Casey.He was London-born and later lived and worked in Cornwall, initially in the artists’ colony of St Ives.Breon was educated at Dartington Hall School in Devon and, following his national service duty, O'Casey attended the Anglo-French Art School, a small school in St John's Wood, London, based on the French model.He was an apprentice to Denis Mitchell and Dame Barbara Hepworth, which informed his own later career.In St Ives too, he began making jewelry as a side line, although his main occupation was always painting.He continued making jewellery until he was 70 years old. [SEP] Knowledge 2: Ali Rahuma
Ali Khalifa Rahuma( born May 16, 1982) is a Libyan football midfielder who's nationality is Libyan.He currently plays for Al- Ittihad, and is a member of the Libya national football team.

Answer: Irish