Mary Grey, Countess Grey

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The Countess Grey
Lady-Caroline-Barrington-ne-Grey-Lady-Georgiana-Grey-Mary-Elizabeth-Grey-ne-Ponsonby-Countess-Grey (cropped).jpg
Spouse of the Prime Minister
of the United Kingdom
In role
22 November 1830 – 9 July 1834
Preceded byThe Duchess of Wellington
Succeeded byVacant
Personal details
Mary Elizabeth Ponsonby

(1776-03-04)4 March 1776
Died26 November 1861(1861-11-26) (aged 85)
Eaton Square, London
(m. 1794; died 1845)
Children16, including Henry, Charles, and Frederick

Mary Elizabeth Grey, Countess Grey (née Ponsonby; 4 March 1776 – 26 November 1861) was a British aristocrat and Countess of Grey as wife of Charles Grey, 2nd Earl Grey, the Prime Minister of the United Kingdom.


Mary Elizabeth Ponsonby was born on 4 March 1776 in Whitehaven. She was the only daughter of William Ponsonby (1744–1806), the future 1st Baron Ponsonby and his wife, the Honourable Louisa Molesworth (1749–1824), daughter of Richard Molesworth, 3rd Viscount Molesworth.

Personal life[edit]

She married on 18 November 1794 Charles Grey MP (1764–1845), the future 2nd Earl Grey and Prime Minister of the United Kingdom of Great Britain and Ireland. He was the son of Charles Grey (1729–1807), later 1st Baron Grey and 1st Earl Grey, and his wife Elizabeth Grey née Grey (1743–1822). They had ten sons and six daughters:

Later life and death[edit]

Charles Grey, 2nd Earl Grey, was Prime Minister of the United Kingdom of Great Britain and Ireland from 22 November 1830 to 16 July 1834. Mary Grey, Countess Grey, was widowed on 17 July 1845. She lived until 26 November 1861, when she died aged 85 in Eaton Square, London.

Titles and styles[edit]

  • 1776–1794: Miss Mary Ponsonby
  • 1794–1801: Mrs. Charles Grey
  • 1801–1806: The Honourable Mrs. Charles Grey
  • 1806–1807: Viscountess Howick
  • 1807–1845: The Right Honourable The Countess Grey
  • 1845–1861: The Right Honourable The Dowager Countess Grey



  1. ^ Burke's Peerage, (1999), pp.1225–6
Unofficial roles
Preceded by
The Duchess of Wellington
Spouse of the Prime Minister of the United Kingdom
Title next held by
The Lady Peel