William Henry Cavendish-Bentinck, Marquess of Titchfield (21 August 1796 – 5 March 1824), was a British

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 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,...

 (MP).

Titchfield was the eldest son of William Cavendish-Bentinck, 4th Duke of Portland

William Bentinck, 4th Duke of Portland

William Henry Cavendish Cavendish-Scott-Bentinck, 4th Duke of Portland PC, FRS, FSA , styled Marquess of Titchfield until 1809, was a British politician who served in various positions in the governments of George Canning and Lord Goderich.-Background and education:Portland was the eldest son of...

, and his wife Henrietta (née Scott). Prime Minister William Cavendish-Bentinck, 3rd Duke of Portland

William Cavendish-Bentinck, 3rd Duke of Portland

William Henry Cavendish-Bentinck, 3rd Duke of Portland, KG, PC was a British Whig and Tory statesman, Chancellor of the University of Oxford and Prime Minister. He was known before 1762 by the courtesy title Marquess of Titchfield. He held a title of every degree of British nobility—Duke,...

 was his grandfather. His younger brothers were William John Cavendish-Bentinck-Scott, 5th Duke of Portland

William Cavendish-Scott-Bentinck, 5th Duke of Portland

William John Cavendish Cavendish-Scott-Bentinck, 5th Duke of Portland , styled Lord William Cavendish-Scott-Bentinck before 1824 and Marquess of Titchfield between 1824 and 1854, was a British aristocratic eccentric who preferred to live in seclusion...

 and Lord George Bentinck

Lord George Bentinck

Lord George Frederick Cavendish-Scott-Bentinck , better known as simply Lord George Bentinck, was an English Conservative politician and racehorse owner, best known for his role in unseating Sir Robert Peel over the Corn Laws.Bentinck was a younger son of the 4th Duke of Portland, and elected a...

.

Titchfield was elected to the House of Commons

British House of Commons

The House of Commons is the lower house of the Parliament of the United Kingdom, which also comprises the Sovereign and the House of Lords . Both Commons and Lords meet in the Palace of Westminster. The Commons is a democratically elected body, consisting of 650 members , who are known as Members...

 in 1819 as MP for Bletchingley

Bletchingley (UK Parliament constituency)

Bletchingley was a parliamentary borough in Surrey. It returned two Members of Parliament to the House of Commons of England from 1295 to 1707, to the House of Commons of Great Britain from 1707 to 1800, and to the House of Commons of the United Kingdom until 1832, when the constituency was...

, and held that seat until 1822. He was then elected for King's Lynn

King's Lynn (UK Parliament constituency)

King's Lynn was a constituency in Norfolk, known as Lynn or Bishop's Lynn prior to 1537, which returned two Members of Parliament to the House of Commons of the Parliament of the United Kingdom until 1885, and one member thereafter. Until 1918 it was a parliamentary borough, after which the name...

in 1822, a seat he held until his death in March 1824, at age 27. He never married.