The Sunningdale Agreement was an attempt to establish a power-sharing Northern Ireland Executive and a cross-border Council of Ireland.
 The Agreement was signed at Sunningdale Park located in Sunningdale, Berkshire, on 9 December 1973.
The Ulster Unionist Party leadership election of 1979 saw James Molyneaux succeed Harry West as leader on 7 September.
 At a specially convened meeting of the Ulster Unionist Council at the Ulster Hall, Belfast in early September, Molyneaux (MP for South Antrim) beat Reverend Robert Bradford (MP for Belfast South) by a three to one majority (with Austin Ardill coming a distant third).
 Molyneaux had previously been parliamentary leader of the United Ulster Unionist Council since 22 October 1974 (West had lost his seat in that month's general election).
The Young Unionists, formally known as the Ulster Young Unionist Council (UYUC), is the youth wing of the Ulster Unionist Party (UUP).
 It has in its present incarnation been in existence since 2004.
The Larne gun-running was a major gun smuggling operation organised in April 1914 in Ireland by Major Frederick H. Crawford and Captain Wilfrid Spender for the Ulster Unionist Council to equip the Ulster Volunteer Force.
 The operation involved the smuggling of almost 25,000 rifles and between 3 and 5 million rounds of ammunition from the German Empire, with the shipments landing in Larne, Donaghadee, and Bangor in the early hours between Friday 24 and Saturday 25 April 1914.
 The Larne gun-running may have been the first time in history that motor-vehicles were used "on a large scale for a military-purpose, and with striking success".
The Vanguard Unionist Progressive Party (VUPP), informally known as Ulster Vanguard, was a unionist political party which existed in Northern Ireland between 1972 and 1978.
 Led by William Craig, the party emerged from a split in the Ulster Unionist Party (UUP) and was closely affiliated with several loyalist paramilitary groups.
 The presence of features such as an honour guard and a common salute led opponents to accuse it of being fascist.
 The party was set up in opposition to power sharing with Irish nationalist parties.
 It opposed the Sunningdale Agreement and was involved in extra-parliamentary activity against the agreement.
 However, in 1975, during discussions on the constitutional status of Northern Ireland in the constitutional convention, William Craig suggested the possibility of voluntary power sharing with the nationalist Social Democratic and Labour Party.
 In consequence the party split, with dissenters forming the United Ulster Unionist Party.
 Thereafter Vanguard declined and following poor results in the 1977 local government elections, Craig merged the remainder of Vanguard into the UUP in February 1978.
The United Ulster Unionist Party (UUUP) was a unionist political party which existed in Northern Ireland between 1975 and 1984.
Ulster's Solemn League and Covenant, commonly known as the Ulster Covenant, was signed by just under half a million Irishmen and women, mainly from Ulster, on and before 28 September 1912, in protest against the Third Home Rule Bill introduced by the British Government in the same year.
 Sir Edward Carson was the first person to sign the Covenant at Belfast City Hall with a silver pen, followed by Lord Londonderry (the former viceroy of Ireland), representatives of the Protestant churches, and then by Sir James Craig.
 The signatories, 471,414 in all, were all against the establishment of a Home Rule parliament in Dublin.
 The Ulster Covenant is immortalised in Rudyard Kipling's poem "".
 On 23 September 1912, the Ulster Unionist Council voted in favour of resolution pledging itself to the Covenant.
The 2000 Ulster Unionist Party leadership election was triggered by the decision of Martin Smyth to challenge incumbent David Trimble over the party's direction in the implementation of the Belfast Agreement at the party's annual general meeting on 25 March 2000.
 The UUP has held a leadership election every March since at least the Ulster Unionist Council constitution was altered in 1973, however it is rarely contested.
 This is one of the few occasions when it has been contested.
The United Ulster Unionist Council (also known as the United Ulster Unionist Coalition) was a body that sought to bring together the Unionists opposed to the Sunningdale Agreement in Northern Ireland.
The 2004 Ulster Unionist Party leadership election was triggered by the decision of a group of UUP members to challenge incumbent leader David Trimble over the party's direction following the 2003 Northern Ireland Assembly elections at the party's annual general meeting on 27 March 2004.
 The UUP has held a leadership election every March since at least the Ulster Unionist Council constitution was altered in 1973, however it is rarely contested.
 This is one of the few occasions when it has been contested.

Question: Where did United Ulster Unionist Council Sign the Sunningdale Agreement?
Answer: Sunningdale Park