Jacob Pleydell-Bouverie, 2nd Earl of Radnor FRS FSA (4 March 1750 – 27 January 1828), styled Hon. Jacob Pleydell-Bouverie from 1761 to 1765 and Viscount Folkestone from 1765 to 1776, was a British politician who sat in the House of Commons from 1771 to 1776 when he succeeded to the peerage as Earl of Radnor. 
Born in Westminster, he was the son of William Bouverie, 1st Earl of Radnor and Harriet Pleydell, the daughter of Sir Mark Stuart Pleydell of Coleshill House in Berkshire (now Oxfordshire). Jacob was educated at Harrow and University College, Oxford, from which he took a BA in 1770 and an MA in 1773.  He was returned to the House of Commons for Salisbury upon his coming of age in 1771. 
He succeeded his father as Earl of Radnor on 23 January 1776 and as Recorder of Salisbury on 13 March 1776.  On 15 February 1779, Radnor was made a Fellow of the Society of Antiquaries. He was commissioned a captain in the Northamptonshire Regiment of Militia on 27 September 1779. On 30 November 1780, he was appointed a deputy lieutenant for Wiltshire, and on 19 November 1791, Lord Lieutenant of Berkshire, a post he resigned in 1819 due to ill health. From 24 December 1791 to 8 May 1800, he was also colonel of the Berkshire Militia.  
Radnor became a director of the French Hospital in 1789, later serving as governor. Successive Earls of Radnor were governors of the hospital from the eighteenth century to 2015. 
On 12 February 1795, Radnor was made a Fellow of the Royal Society, and was appointed High Steward of Wallingford in 1799. On 20 January 1802, he was also appointed a deputy lieutenant of Kent.  He died at Longford Castle in Wiltshire in 1828 and was succeeded by his eldest son.
Radnor resided at Longford Castle and his mother's property, Coleshill House, and married Hon. Anne Duncombe, daughter of Anthony Duncombe, 1st Baron Feversham and Anne Hales, on 24 January 1777 and had seven children:
Earl of Radnor, in the County of Wiltshire, is a title which has been created twice. It was first created in the Peerage of England in 1679 for John Robartes, 2nd Baron Robartes, a notable political figure of the reign of Charles II. The earldom was created for a second time in the Peerage of Great Britain in 1765 when William Bouverie, 2nd Viscount Folkestone, was made Earl of Radnor.
Edward Pleydell-Bouverie PC, FRS, styled The Honourable from 1828, was a British Liberal politician. He was a member of Lord Palmerston's first administration as Paymaster-General and Vice-President of the Board of Trade in 1855 and as President of the Poor Law Board between 1855 and 1858.
William Pleydell-Bouverie, 7th Earl of Radnor, was a British peer.
Jacob Pleydell-Bouverie, 8th Earl of Radnor was a British nobleman. He was the son of William Pleydell-Bouverie, 7th Earl of Radnor and Helena Olivia Adeane.
Jacob Pleydell-Bouverie, 6th Earl of Radnor,, styled Viscount Folkestone from 1889 to 1900, was a British Conservative Party politician and a British Army officer.
William Pleydell-Bouverie, 5th Earl of Radnor PC, styled Viscount Folkestone from 1869 to 1889, was a British Conservative politician. He served as Treasurer of the Household under Lord Salisbury between 1885 and 1886 and again between 1886 and 1891.
Jacob Pleydell-Bouverie, 4th Earl of Radnor was a British nobleman and army officer.
William Pleydell-Bouverie, 3rd Earl of Radnor, styled Viscount Folkestone until 1828, was the son of Jacob Pleydell-Bouverie, 2nd Earl of Radnor and Hon. Anne Duncombe.
William Bouverie, 1st Earl of Radnor FRS was a British peer, styled Hon. William Bouverie from 1747 until 1761.
Jacob Bouverie, 1st Viscount Folkestone was an English politician, known as Sir Jacob Bouverie, 3rd Baronet from 1737 to 1747.
KatherineHarriot Duncombe Pleydell-Bouverie was a pioneer in modern English studio pottery, known for her wood-ash glazes.
Pleydell-Bouverie is an English surname, and may refer to:
Philip Pleydell-Bouverie, was a British Whig politician.
The Pleydell Baronetcy, of Coleshill in the County of Berkshire, was a title in the Baronetage of Great Britain. It was created on 15 June 1732 for Mark Stuart Pleydell. The title became extinct on his death in 1768. His daughter and only child, Harriet Pleydell, married William Bouverie, 1st Earl of Radnor. Their son Jacob Pleydell-Bouverie, 2nd Earl of Radnor, succeeded to the Pleydell estates and assumed the additional surname of Pleydell.
Admiral The Honourable Duncombe Pleydell-Bouverie, was a British naval commander and Whig politician.
Anthony Duncombe, 1st Baron Feversham, was a British landowner and politician who sat in the House of Commons from 1727 until 1747 when he was raised to the peerage as Baron Feversham.
Hon. Edward Bouverie was a British politician who sat in the House of Commons between 1761 and 1810.
Coleshill House was a country house in England, near the village of Coleshill, in the Vale of White Horse. Historically, the house was in Berkshire but since boundary changes in 1974 its site is in Oxfordshire.
Hon. William Henry Bouverie (1752–1806) was a British politician who sat in the House of Commons for 26 years from 1776 to 1802.
Hon. Philip Bouverie-Pusey was an English heir and landowner.