 Sarah Spencer married Sir William Henry Lyttelton in March 1813, after an engagement of two months.He succeeded his half-brother to the barony of Lyttelton in 1828, upon which they began residing at Hagley Hall in Worcestershire.They had five children, two daughters Caroline (1816–1902) and Lavinia (1821–1850), and three sons George (1817–1876), Spencer (1818–1889) and William (1820–1884).