Spencer and
Jane Perceval had 13 children, of whom 12 survived to adulthood. Four of the daughters never married, and lived together all their lives. During their mother's life, they lived with her in Elm Grove,
Ealing; after her death, the sisters moved to nearby
Pitzhanger Manor House, while their brother Spencer took over Elm Grove.
Cousin marriage was common: the remaining two daughters and two of the sons took this path. • Jane (1791-1824) married her cousin Edward Perceval, son of Lord Arden, in 1821 and lived in
Felpham, Sussex. She died three years after marrying, apparently in childbirth. • Frances (1792-1877) lived with three unmarried sisters (Maria, Louisa and Frederica) at Pitzhanger Manor, Ealing from 1843. • Maria (1794-1877) lived with her three unmarried sisters. •
Spencer (1795-1859) was, like his father, educated at Harrow and Trinity College, Cambridge. After Perceval's assassination, Spencer junior was voted an annuity of £1,000 (), free legal training at Lincoln's Inn and a tellership of the Exchequer, all of which left him financially secure. He became a Member of Parliament at the age of 22 and in 1821 married Anna, a daughter of the chief of the
clan Macleod, with whom he had eleven children. He joined the
Catholic Apostolic Church and was created an apostle in 1833. He served as a
metropolitan lunacy commissioner. • Charles (born and died 1796) • Frederick James (1797-1861) was the only one of Perceval's sons not to go to Harrow. Due to his fragile health he was sent to school at
Rottingdean. He married for the first time in 1827, spent some time in
Ghent, Belgium, was a director of the
Clerical, Medical and General Life Assurance Society and a justice of the peace for Middlesex and for Kent, but generally led a quiet and retired life. Widowed in 1843, he married for the second time the following year. A grandson, Frederick Joseph Trevelyan Perceval, who was a Canadian rancher, became the 10th
de jure Earl of Egmont (he did not claim the title) and was the father of the 11th earl. • Rev. Henry (1799-1885) was educated at Harrow, where he was the only Perceval to become head of school. He went to
Brasenose College, Oxford. In 1826 he married his cousin Catherine Drummond. For 46 years Henry was the rector of
Elmley Lovett in Worcestershire. • Dudley Montague (1800-1856) was educated at Harrow and
Christ Church, Oxford. Like his brother Spencer, he was given free legal training at Lincoln's Inn but was not called to the bar. He spent two years as an administrator at the Cape of Good Hope, where he married a daughter of Gen. Sir
Richard Bourke, future
Governor of New South Wales, in 1827. Back in England he obtained a treasury post and defended his father's reputation after it was attacked in
Napier's history of the Peninsular War. In 1853 he stood unsuccessfully against
William Gladstone in the election for an MP to represent
Oxford University. • Isabella (1801-1886) married her cousin
Spencer Horatio Walpole in 1835 and was the only one of Perceval's daughters to have children. Her husband was a lawyer who became an MP in 1846 and served as Home Secretary. They lived in the Hall on Ealing Green, next-door to Isabella's four unmarried sisters. •
John Thomas (1803-1876) was educated at Harrow. After a three-year career as an officer in the
Grenadier Guards and a term at Oxford University, he spent three years in asylums and became a campaigner for reform of the Lunacy Laws. In 1832, just after his release from an asylum, he married a cheesemonger's daughter. • Louisa (1804-1891) lived with her three unmarried sisters. • Frederica (1805-1900) lived with her three unmarried sisters. In her will she left money to build All Saints Church, Ealing, in memory of her father (he was born on All Saints Day). It is also known as the Spencer Perceval Memorial Church. • Ernest Augustus (1807-1896) was educated at Harrow. He spent nine years in the 15th Hussars, seven of them as a captain. In 1830, he married his cousin Beatrice Trevelyan, daughter of Sir John Trevelyan, 5th Baronet. The couple settled in Somerset and raised a large family, including antiquary
Spencer George Perceval. Ernest served as private secretary to the Home Office on three occasions. ==Arms==