Mary Elizabeth Ponsonby was born 3 March 1775 to William Brabazon Ponsonby, 1st Baron Ponsonby (1744-1806) and Louisa Molesworth (1749-1824) and died 26 November 1861 at Eaton Square in London, Greater London, England, United Kingdom of unspecified causes. She married Charles Grey, 2nd Earl Grey (1764-1845) 18 November 1794 in Hereford, London, England, United Kingdom. Notable ancestors include Charlemagne (747-814), William I of England (1027-1087), Hugh Capet (c940-996), Alfred the Great (849-899), Rurik (c832-879), Henry II of England (1133-1189). Ancestors are from Ireland, the United Kingdom, France, Germany, England, Russia, Ukraine, Spain, Portugal, Belgium, Israel, Hungary, the Netherlands, Belarus, Italy, Turkey, the Byzantine Empire, Sweden, the United States.

Offspring of Charles Grey and Mary Elizabeth Ponsonby (1775-1861)
Name Birth Death Joined with
Louisa Elizabeth Grey (1797-1841) 7 April 1797 26 November 1841 John George Lambton, 1st Earl of Durham (1792-1840)

Elizabeth Grey (1798-1880) 10 July 1798 8 November 1880 John Crocker Bulteel (1790-1843)

Caroline Grey (1799-1875)
Henry George Grey, 3rd Earl Grey (1802-1894)
Charles Grey (1804-1870)
Frederick William Grey (1805-1878)
Mary Grey (1807-1884)
William Grey (1808-?)
George Grey (1809-1891)
Thomas Grey (1811-?)
John Grey (1812-1895)
Francis Richard Grey (1813-1890)
Henry Cavendish Grey (1814-1880)
William George Grey (1819-1865)

Noteworthy descendants include

  1. Alexander Frederick Douglas-Home, Baron Home of the Hirsel (1903-1995)

Footnotes (including sources)