Ian Richard Kyle Paisley, Baron Bannside, (6 April 1926 – 12 September 2014) was a loyalist politician and Protestant religious leader from Northern Ireland who served as leader of the Democratic Unionist Party (DUP) from 1971 to 2008 and First Minister of Northern Ireland from 2007 to 2008.
Paisley became a Protestant evangelical minister in 1946 and remained one for the rest of his life. In 1951 he co-founded the Reformed fundamentalist Free Presbyterian Church of Ulster and was its leader until 2008. Paisley became known for his fiery sermons and regularly preached anti-Catholicism, anti-ecumenism and against homosexuality. He gained a large group of followers who were referred to as Paisleyites.
Paisley became involved in Ulster unionist republicans, and all attempts to involve the Republic of Ireland in Northern Irish affairs. His efforts helped bring down the Sunningdale Agreement of 1974. He also opposed the Anglo-Irish Agreement of 1985, with less success. His attempts to create a paramilitary movement culminated in Ulster Resistance.