Eleanor married Cornelius Viscount Lismore O'Callaghan on 11 Aug 1808. Cornelius (son of Cornelius OCallaghan, 1st Baron Lismore and Frances Ponsonby) was born on 2 Oct 1775 in Shanbally, Tipperary, Ireland; died on 30 May 1857 in Dublin, Dublin, Ireland. [Group Sheet] [Family Chart]

1. Cornelius O'Callaghan was born in 1809; died on 16 Aug 1849.
2. William Frederick O'Callaghan was born in 1810; died in 1836.
3. George Ponsonby O'Callaghan, 2nd Viscount Lismore was born on 16 Mar 1815; died on 29 Oct 1898 in Folkestone, Kent, England.
4. Anne Maria Louisa O'Callaghan was born in Abt. 1817; died on 23 Feb 1887.