Sarah Spencer was born 29 July 1787 in Althorp, Northamptonshire, England, United Kingdom to George John Spencer, 2nd Earl Spencer (1758-1834) and Lavinia Bingham (1762-1831) and died 13 April 1870 Hagley, Worcestershire, England, United Kingdom of unspecified causes. She married William Henry Lyttelton, 3rd Baron Lyttelton (1782-1837) 4 March 1813 .
|Offspring of William Henry Lyttelton, 3rd Baron Lyttelton and Sarah Spencer (1787-1870)|
|Caroline Lavinia Lyttelton (1816-1902)|
|George William Lyttelton, 4th Baron Lyttelton (1817-1876)||31 March 1817 London, Greater London, England, United Kingdom||19 April 1876 London, Greater London, England, United Kingdom||Mary Glynne (1813-1857) Mary Glynne (1813-1857) Sybella Harriet Clive (1836-1900)|
|Spencer Lyttelton (1818-1889)|
|William Henry Lyttelton (1820-1884)|
|Lavinia Lyttelton (1821-1850)|