Louisa died after a long illness in June 1821 aged 54.[8] The following year, on 24 September 1822, Lord Liverpool was married to Mary Chester at Hampton Court[3] by the Lord Bishop of London.[9] Miss Mary Chester, aged 45 at the time, then became the Countess of Liverpool.[1] Lord Liverpool had been grief-stricken at Louisa's death, and his re-marriage to her long-time friend was seen as proof of his need for a 'peaceful domestic refuge',[10] with Louisa's sister, Lady Erne, describing Mary as 'a person of more than ordinary merit'.[7]
Liverpool began to suffer from ill-health, and finally retired as prime minister in April 1827, after having a severe stroke two months earlier. After this, he and Mary remained at their country house at Coombe, Surrey. Here his conditioned remained poor, and he died on 4 December 1828 in the presence of Mary.[11] Having died childless, he was succeeded as Earl of Liverpool by his younger half-brother Charles.[12]
In 1829, Mary, now known as the Dowager Countess of Liverpool, bought Norbiton Hall near Kingston upon Thames from Charles Pallmer MP. Here she lived, along with Robert Henry Jenkinson, her late husband's cousin.[13][14] Mary died on the 18 October 1846, aged 69 years, at Norbiton Hall.[15] She had been suffering from heart disease for a number of years.[16] She was buried at All Saints Church, Kingston upon Thames, on 24 October.[17]
Gash, Norman (2004). "Jenkinson, Robert Banks, second earl of Liverpool (1770–1828)". In Matthew, Henry Colin Gray; Harrison, Brian Howard (eds.). Oxford dictionary of national biography: from the earliest times to the year 2000. Vol. 29. Oxford University Press. ISBN978-0-19-861379-4.