Lydia Louisa Blunt (1819 - 1916) was an heiress and philanthropist from England.
- Charles William Blunt (22 November 1810 - 5 November 1890), 6th Baronet
- Mary Amelia Grenier Blunt (born about 1811 in Calcutta)
- Clara Elizabeth Marrant Blunt (born about 1811 in Calcutta)
- Anne Fitzpatrick Blunt (born about 1811 in Calcutta)
- Eliza Anna Blunt (born 24 September 1812 in Calcutta)
- Charlotte Fletcher Blunt (17 June 1816 in Calcutta - 1904 in Chertsey)
- Richard John Blunt (5 March 1822 in Calcutta - 13 May 1874 in Chertsey)
- Elizabeth Sophia Blunt (10 January 1829 in London - 1888 in Chertsey)
Lydia remained unmarried all her life and lived with two of her sisters, Charlotte and Elizabeth, both spinsters in Chertsey.