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William Ponsonby, 2nd Earl of Bessborough

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Title: William Ponsonby, 2nd Earl of Bessborough  
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Subject: Postmaster General of the United Kingdom, Thomas Robinson, 1st Baron Grantham
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William Ponsonby, 2nd Earl of Bessborough

The Earl of Bessborough
William Ponsonby by Sir Joshua Reynolds
Spouse(s) Caroline Cavendish
Father Brabazon Ponsonby, 1st Earl of Bessborough
Mother Sarah Margetson
Born 1704
Died 11 March 1793 (age 89)

William Ponsonby, 2nd Earl of Bessborough PC PC (I) (1704 – 11 March 1793) was a British politician and public servant. He was an Irish and English peer and member of the House of Lords (styled Hon. William Ponsonby from 1723 to 1739 and Viscount Duncannon from 1739 to 1758). He served in both the Irish and the British House of Commons, before entering the House of Lords, and held office as a Lord Commissioner of the Admiralty, Lord Commissioner of the Treasury, and as Postmaster General of the United Kingdom. He was also a Privy Counsellor, Chief Secretary for Ireland and Earl of Bessborough.

Family life

William Ponsonby was the son of Brabazon Ponsonby, 1st Earl of Bessborough and his wife Sarah Margetson, and elder brother of John Ponsonby.

On 5 July 1739 William married Lady Caroline Cavendish, eldest daughter of William Cavendish, 3rd Duke of Devonshire, who died in 1760 aged 40.[1]

They had three surviving children:[1]

Parkstead House, Roehampton, was built in 1750 for William Ponsonby,[2] and now forms part of Roehampton University.

Political life

Sir William Ponsonby pastel by Jean-Étienne Liotard

In 1725 Ponsonby was returned to the Irish House of Commons for Newtownards and in 1727 for County Kilkenny, holding the seat until 1758, when his father died and he took his father's titles.[3] From 1741 to 1745, he served as Chief Secretary for Ireland under his father-in-law, then Lord Lieutenant of Ireland.

As Viscount Duncannon, Ponsonby was first appointed a Lord Commissioner of the Admiralty on 27 June 1746, a position he held until 1756, when he was appointed a Lord Commissioner of the Treasury. He also represented the British constituencies of Derby from 1742—1754, Saltash from 1754–1756 and Harwick from 1756–1758. Upon the death of his father on 4 July 1758, Ponsonby succeeded him in the House of Lords under the title Baron Ponsonby of Sysonby on 23 November of that year.

Postmaster General

On 2 June 1759 Ponsonby left the Treasury and was appointed Postmaster General of Great Britain jointly with Robert Hampden-Trevor, 1st Viscount Hampden. He resigned the position when his brother-in-law, William Cavendish, 4th Duke of Devonshire, was dismissed as Lord Chamberlain in October 1762. He was reappointed to the position (and sworn of the Privy Council) in July 1765 jointly with Thomas Robinson, 1st Baron Grantham until he resigned in 1766, his initial offer to resign having been refused.[4]

Upon William Ponsonby's death on 11 March 1793 his son, Frederick Ponsonby, succeeded to his titles.[5]


  1. ^ a b Innes (editors), A., E., and M. (1829). The Annual peerage of the British empire for 1829. London: Saunders and Otley. p. 87-88. Retrieved 2013-02-15. 
  2. ^ "Parkstead House: History". Parkstead House. Retrieved 2010-02-06. 
  3. ^ Leigh Rayment's historical List of Members of the Irish House of Commons( ) cites: Johnston-Liik, Edith Mary (2002). The History of the Irish Parliament 1692-1800 (6 volumes). Ulster Historical Foundation. 
  4. ^  
  5. ^  

External links

Parliament of Ireland
Preceded by
Charles Campbell
Richard Tighe
Member of Parliament for Newtownards
With: Richard Tighe
Succeeded by
John Vesey
Robert Jocelyn
Preceded by
William Flower
Patrick Wemyss
Member of Parliament for Kilkenny County
With: Patrick Wemyss 1727–1747
Patrick Wemys 1747–1758
Succeeded by
Patrick Wemys
Henry Flood
Parliament of Great Britain
Preceded by
Lord James Cavendish
John Stanhope
Member of Parliament for Derby
With: John Stanhope 1742–1748
Thomas Rivett 1748–1754
Succeeded by
Lord Frederick Cavendish
George Venables-Vernon
Preceded by
Stamp Brooksbank
George Brydges Rodney
Member of Parliament for Saltash
With: George Clinton
Succeeded by
George Clinton
Charles Townshend
Preceded by
John Phillipson
Wenman Coke
Member of Parliament for Harwich
With: Wenman Coke
Succeeded by
Wenman Coke
Thomas Sewell
Political offices
Preceded by
Hon. Henry Bilson-Legge
Chief Secretary for Ireland
Succeeded by
Richard Lidell
Preceded by
Thomas Coke, 1st Earl of Leicester
Everard Fawkener
Postmaster General of Great Britain
With: The Lord Trevor
Succeeded by
The Lord Trevor
The Earl of Egmont
Preceded by
The Lord Trevor
The Lord Hyde
Postmaster General of Great Britain
With: The Lord Grantham
Succeeded by
The Viscount Hillsborough
The Lord le Despencer
Peerage of Ireland
Preceded by
Brabazon Ponsonby
Earl of Bessborough
Succeeded by
Frederick Ponsonby
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