Terence O'Neill

Captain The Right Honourable The Lord O'Neill of the Maine PC (NI)
O'Neill in 1966
4th Prime Minister of Northern Ireland
In office 25 March 1963 – 28 April 1969
Monarch	Elizabeth II
Governor	The Lord Wakehurst The Lord Erskine of Rerrick The Lord Grey of Naunton
Preceded by	The 1st Viscount Brookeborough
Succeeded by	James Chichester-Clark
7th Leader of the Ulster Unionist Party
In office 25 March 1963 – 1 May 1969
Preceded by	The 1st Viscount Brookeborough
Succeeded by	James Chichester-Clark
Minister of Finance
In office 21 September 1956 – 25 March 1963
Prime Minister	The Viscount Brookeborough
Preceded by	George Boyle Hanna
Succeeded by	Jack Andrews
Minister of Home Affairs
In office 20 April 1956 – 23 October 1956
Prime Minister	The Viscount Brookeborough
Preceded by	George Boyle Hanna
Succeeded by	W. W. B. Topping
High Sheriff of Antrim
In office 1 January 1953 – 31 December 1953
Preceded by	Hugh Cameron McGildowney
Succeeded by	George Clark
Member of the House of Lords Lord Temporal
In office 23 January 1970 – 12 June 1990 Life Peerage
Member of the Northern Ireland Parliament for Bannside
In office 7 November 1946 – 16 April 1970
Preceded by	Malcolm William Patrick
Succeeded by	Ian Paisley
Personal details
Born	(1914-09-10)10 September 1914 London, England
Died	12 June 1990(1990-06-12) (aged 75) Lymington, England
Political party	Ulster Unionist Party
Spouse	Katharine Jean ​ (m. 1944)​
Children	2
Relatives	James Chichester-Clark Phelim O’Neill
Education	Eton College
Alma mater	Sandhurst
Military service
Allegiance	United Kingdom
Branch/service	British Army
Years of service	1940–1945
Rank	Captain
Unit	6th Guards Tank Brigade
Battles/wars	World War II

Terence Marne O'Neill, Baron O'Neill of the Maine, PC (NI) (10 September 1914 – 12 June 1990), was the fourth prime minister of Northern Ireland and leader (1963–1969) of the Ulster Unionist Party (UUP). A moderate unionist, who sought to reconcile the sectarian divisions in Northern Ireland society, he was a member of the Parliament of Northern Ireland for the Bannside constituency from 1946 until his resignation in January 1970; his successor in the House of Commons of Northern Ireland after a by-election was Ian Paisley, while control of the UUP also passed to more hard-line elements.