O'Neill ministry

The Parliament of Northern Ireland was the home rule legislature created under the Government of Ireland Act 1920, which existed from 7 June 1921 to 30 March 1972, when it was suspended. It was subsequently abolished under the Northern Ireland Constitution Act 1973.

The third Government or Executive Committee of the Privy Council of Northern Ireland was led by Terence O'Neill who was Prime Minister from 25 March 1963 to 1 May 1969.