MARIA married Sir John William(4th Earl of Bessborough) Ponsonby on 16 Nov 1805 in Berkeley Square, London, England. Sir (son of Fredrick (3rd Earl Bessbrough) Ponsonby and Henrietta Spencer) was born on 31 Aug 1781 in London, England; died on 16 May 1847 in Dublin Castle, Dublin, Ireland. [Group Sheet] [Family Chart]

1. Georgiana Sarah Ponsonby was born on 14 Aug 1807 in London, England; died on 25 Jun 1861 in Glos, Calvados, Basse-Normandie, France.
2. John George (5th Earl of Bessborough) Brabazon-Ponsonby was born on 14 Oct 1809 in Cavendish Square, Middlesex, England; died on 28 Jan 1880 in Kilkenny, Ireland.
3. William Wentworth Ponsonby was born in 1812 in St Marylebone, England; died in 1831 in Onboard HMS Madagascar, off Nauplia, Greece.
4. Augusta Lavinia Priscilla Ponsonby was born on 11 May 1814 in Brympton Park, Somerset; died on 19 Nov 1904 in Wimbledon, London, England.
5. Maria Jane Elizabeth Ponsonby was born in 1815; died on 13 Sep 1897.
6. Frederick George Brabazon Ponsonby (maid. name 6th Earl of Bessborough) was born on 11 Sep 1815 in Trabzon, Turkey; died on 11 Mar 1895.
7. Rev. Walter William (7th Earl of Bessborough) Brabazon-Ponsonby was born on 13 Aug 1821 in Rockhampton, Surrey, England; died on 24 Feb 1906.