James Cecil, 1st Marquess of Salisbury,, styled Viscount Cranborne until 1780 and known as the Earl of Salisbury between 1780 and 1789, was a British nobleman and politician.

Launceston, also known at some periods as Dunheved, was a parliamentary constituency in Cornwall which returned two Members of Parliament to the British House of Commons from 1295 until 1832, and one member from 1832 until 1918. It was a parliamentary borough until 1885, and a county constituency thereafter.