Earl of Chatham, in the County of Kent

Kent

Kent is a county in southeast England, and is one of the home counties. It borders East Sussex, Surrey and Greater London and has a defined boundary with Essex in the middle of the Thames Estuary. The ceremonial county boundaries of Kent include the shire county of Kent and the unitary borough of...

, was a title in the Peerage of Great Britain

Peerage of Great Britain

The Peerage of Great Britain comprises all extant peerages created in the Kingdom of Great Britain after the Act of Union 1707 but before the Act of Union 1800...

. It was created in 1766 for William Pitt the Elder

William Pitt, 1st Earl of Chatham

William Pitt, 1st Earl of Chatham PC was a British Whig statesman who led Britain during the Seven Years' War...

 on his appointment as Lord Privy Seal

Lord Privy Seal

The Lord Privy Seal is the fifth of the Great Officers of State in the United Kingdom, ranking beneath the Lord President of the Council and above the Lord Great Chamberlain. The office is one of the traditional sinecure offices of state...

, along with the subsidiary title Viscount Pitt, of Burton Pynsent in the County of Somerset

Somerset

The ceremonial and non-metropolitan county of Somerset in South West England borders Bristol and Gloucestershire to the north, Wiltshire to the east, Dorset to the south-east, and Devon to the south-west. It is partly bounded to the north and west by the Bristol Channel and the estuary of the...

, also in the Peerage of Great Britain. The first Earl's wife, the former Lady Hester Grenville

Hester Pitt, Countess of Chatham

Hester Pitt, Countess of Chatham , 1st Baroness Chatham in her own right, was the wife of William Pitt , 1st Earl of Chatham, who was Prime Minister of Great Britain from 1766 to 1768...

, daughter of the 1st Countess Temple

Hester Grenville, 1st Countess Temple

Hester Temple, 1st Countess Temple, 2nd Viscountess Cobham was an English noblewoman.She was born the daughter of Sir Richard Temple, 3rd Bt. , of Stowe, Buckinghamshire...

, had earlier been created Baroness Chatham, of Chatham in the County of Kent, also in the Peerage of Great Britain, in 1761, as at that stage her husband had wished to remain a member of 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...

. Their eldest son inherited the earldom and viscountcy in 1778 and the barony in 1803. Upon his death in 1835 all three titles became extinct.

Prime Minister the Honourable William Pitt the Younger

William Pitt the Younger

William Pitt the Younger was a British politician of the late 18th and early 19th centuries. He became the youngest Prime Minister in 1783 at the age of 24 . He left office in 1801, but was Prime Minister again from 1804 until his death in 1806...

 was the second son of the first Earl.

Barons Chatham (1761)

• Hester Pitt, 1st Baroness Chatham
  Hester Pitt, Countess of Chatham
  Hester Pitt, Countess of Chatham , 1st Baroness Chatham in her own right, was the wife of William Pitt , 1st Earl of Chatham, who was Prime Minister of Great Britain from 1766 to 1768...
  
   (1720–1803)
• John Pitt, 2nd Earl of Chatham, 2nd Baron Chatham
  John Pitt, 2nd Earl of Chatham
  General John Pitt, 2nd Earl of Chatham, KG, PC was a British peer and soldier.-Career:He was the eldest son of William Pitt the Elder and an elder brother of William Pitt the Younger...
  
   (1756–1835)

Earls of Chatham (1766)

• William Pitt, 1st Earl of Chatham
  William Pitt, 1st Earl of Chatham
  William Pitt, 1st Earl of Chatham PC was a British Whig statesman who led Britain during the Seven Years' War...
  
   (1708–1778)
• John Pitt, 2nd Earl of Chatham
  John Pitt, 2nd Earl of Chatham
  General John Pitt, 2nd Earl of Chatham, KG, PC was a British peer and soldier.-Career:He was the eldest son of William Pitt the Elder and an elder brother of William Pitt the Younger...
  
  (1756–1835)