Aldborough is a former parliamentary borough located in the West Riding of Yorkshire, abolished in the great reform act of 1832. Aldborough returned two Members of Parliament from 1558 until 1832. Parliamentary boroughs are boroughs that are entitled to representation in a Parliament. ... The West Riding as an administrative county prior to its abolition in 1974. ... The Reform Act of 1832 introduced the first changes to the United Kingdoms electoral franchise legislation in almost one hundred and fifty years. ... 1832 was a leap year starting on Sunday (see link for calendar). ... A Member of Parliament, or MP, is a representative elected by the voters of an electoral district to a parliament; in the Westminster system, specifically to the lower house. ...

In the 18th century, Aldborough was a pocket borough controlled by the Duke of Newcastle. In April 1754 Newcastle, who had just become Prime Minister, selected his junior colleague and future Prime Minister, William Pitt (Pitt the Elder), to sit as its MP. Pitt represented Aldborough for two-and-a-half years, but having fallen out with Newcastle and been dismissed from his ministry, he was forced to find a new constituency when he next needed to be re-elected to the Commons in 1756. The term rotten borough (or pocket borough, as they were seen as being in the pocket of a patron) refers to a parliamentary borough or constituency in the Kingdom of England (pre-1707), the Kingdom of Great Britain (1707-1801), the Kingdom of Ireland (1536-1801) and the United Kingdom... Thomas Pelham-Holles, 1st Duke of Newcastle-upon-Tyne and 1st Duke of Newcastle-under-Lyme (July 21, 1693 - November 17, 1768) was a Whig statesman, whose official life extended throughout the Whig supremacy of the 18th century. ... William Pitt, 1st Earl of Chatham (15 November 1708–11 May 1778) was a British Whig statesman who achieved his greatest fame as war minister during the Seven Years War and who was later Prime Minister of Great Britain. ...