Charles James Charlie Haughey (16 September 1925 13 June 2006) was Taoiseach of Ireland serving three terms in office (from December 1979 to June 1981 March 1982 to December 1982 and March 1987 to February 1992). He was also the fourth leader of Fianna Fail (from 1979 until 1992). Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Office Holder