Sir David Callender Campbell (29 January 1891 - 12 June 1963) was an Ulster Unionist politician in Northern Ireland

Northern Ireland

Northern Ireland is one of the four countries of the United Kingdom. Situated in the north-east of the island of Ireland, it shares a border with the Republic of Ireland to the south and west...

. He was elected Member of Parliament

Member of Parliament

A Member of Parliament is a representative of the voters to a :parliament. In many countries with bicameral parliaments, the term applies specifically to members of the lower house, as upper houses often have a different title, such as senate, and thus also have different titles for its members,...

 for Belfast South

Belfast South (UK Parliament constituency)

Belfast South is a Parliamentary Constituency in the United Kingdom House of Commons.-Boundaries:The seat was created in 1922 when, as part of the establishment of the devolved Stormont Parliament for Northern Ireland, the number of MPs in the Westminster Parliament was drastically cut...

 in a 1952 by-election

Belfast South by-election, 1952

The Belfast South by-election, 1952 was held following the resignation of Ulster Unionist Party Member of Parliament, Hugh Gage.-History:...

, and served until his death in 1963. In 1959 while leader of the UUP Westminster MP's, he became involved in the row over Catholic membership of the UUP when he supported the idea in a letter to the party leader.