Biography of William Pleydell-Bouverie 3rd Earl Radnor 1779-1869
Paternal Family Tree: Bouverie
On 28 Jan 1776 [his grandfather] William Pleydell-Bouverie 1st Earl Radnor (age 50) died. His son [his father] Jacob Pleydell-Bouverie 2nd Earl Radnor (age 25) succeeded 2nd Earl Radnor, 3rd Viscount Folkestone, 3rd Baron Longford, 5th Baronet Bouverie of St Catherine Cree Church in London.
On 24 Jan 1777 [his father] Jacob Pleydell-Bouverie 2nd Earl Radnor (age 26) and [his mother] Anne Duncombe Countess Radnor (age 19) were married. She by marriage Countess Radnor. He the son of William Pleydell-Bouverie 1st Earl Radnor and Harriet Pleydell.
On 11 May 1779 William Pleydell-Bouverie 3rd Earl Radnor was born to Jacob Pleydell-Bouverie 2nd Earl Radnor (age 29) and Anne Duncombe Countess Radnor (age 21).
On 02 Oct 1800 William Pleydell-Bouverie 3rd Earl Radnor (age 21) and Catherine Pelham-Clinton (age 24) were married. He the son of Jacob Pleydell-Bouverie 2nd Earl Radnor (age 50) and Anne Duncombe Countess Radnor (age 42). She a great x 3 granddaughter of King Charles II of England Scotland and Ireland. 
In 1801 William Pleydell-Bouverie 3rd Earl Radnor (age 21) was elected MP Downton.
On 08 Jul 1801 [his daughter] Catherine Pleydell-Bouverie was born to William Pleydell-Bouverie 3rd Earl Radnor (age 22) and [his wife] Catherine Pelham-Clinton (age 25).
On 22 Nov 1801 William Pleydell-Bouverie 3rd Earl Radnor (age 22) was appointed Deputy Lieutenant Berkshire.
In 1802 William Pleydell-Bouverie 3rd Earl Radnor (age 22) was elected MP Salisbury.
On 02 May 1804 [his daughter] Stilborn Pleydell-Bouverie was born to William Pleydell-Bouverie 3rd Earl Radnor (age 24) and [his wife] Catherine Pelham-Clinton (age 28).
On 18 May 1804 [his wife] Catherine Pelham-Clinton (age 28) died.
On 11 Nov 1808 Henry Paulet St John-Mildmay 3rd Baronet (age 44) died. His son [his future brother-in-law] Henry St John-Mildmay 4th Baronet (age 21) succeeded 4th Baronet St John-Mildmay of Farley in Southampton.
On 07 Aug 1809 [his future brother-in-law] Henry St John-Mildmay 4th Baronet (age 22) and Charlotte Bouverie were married. He would later marry her sister Harriett Bouverie Countess Camden (age 18); an example of Married to Two Siblings.
In 1810 Paul Methuen 1st Baron Methuen (age 30) and [his future sister-in-law] Jane Dorothea Mildmay (age 21) were married.
In 1812 Henry St John 4th Viscount Bolingbroke 5th Viscount St John (age 25) and [his future sister-in-law] Maria St John-Mildmay Viscountess Bolingbroke and St John (age 21) were married at St George's Church, Hanover Square.
In 1813 [his future brother-in-law] Paulet St John-Mildmay (age 21) and Anna Maria Wyndham Bouverie were married.
On 24 May 1814 William Pleydell-Bouverie 3rd Earl Radnor (age 35) and Judith St John-Mildmay Countess Radnor (age 24) were married. He the son of Jacob Pleydell-Bouverie 2nd Earl Radnor (age 64) and Anne Duncombe Countess Radnor (age 56).
In 1815 [his brother-in-law] Henry St John-Mildmay 4th Baronet (age 27) and Harriett Bouverie Countess Camden (age 24) were married. She the sister of his first wife Charlotte Bouverie; an example of Married to Two Siblings.
On 18 Sep 1815 [his son] Jacob Pleydell-Bouverie 4th Earl Radnor was born to William Pleydell-Bouverie 3rd Earl Radnor (age 36) and [his wife] Judith St John-Mildmay Countess Radnor (age 25).
On 16 Jan 1817 [his daughter] Ann Maria Pleydell-Bouverie was born to William Pleydell-Bouverie 3rd Earl Radnor (age 37) and [his wife] Judith St John-Mildmay Countess Radnor (age 26).
On 26 Apr 1818 [his son] Edward Pleydell-Bouverie was born to William Pleydell-Bouverie 3rd Earl Radnor (age 38) and [his wife] Judith St John-Mildmay Countess Radnor (age 28).
In Apr 1819 [his daughter] Jane Harriet Pleydell-Bouverie was born to William Pleydell-Bouverie 3rd Earl Radnor (age 39) and [his wife] Judith St John-Mildmay Countess Radnor (age 28).
On 01 Sep 1823 [his brother-in-law] Captain John France St John-Mildmay (age 27) died unmarried.
On 18 Jul 1825 [his daughter] Ann Maria Pleydell-Bouverie (age 8) died.
On 22 Dec 1825 [his daughter] Mary Pleydell-Bouverie was born to William Pleydell-Bouverie 3rd Earl Radnor (age 46) and [his wife] Judith St John-Mildmay Countess Radnor (age 35).
On 27 Jan 1828 [his father] Jacob Pleydell-Bouverie 2nd Earl Radnor (age 77) died. His son William Pleydell-Bouverie 3rd Earl Radnor (age 48) succeeded 3rd Earl Radnor, 4th Viscount Folkestone, 4th Baron Longford, 6th Baronet Bouverie of St Catherine Cree Church in London. [his wife] Judith St John-Mildmay Countess Radnor (age 37) by marriage Countess Radnor.
In 1829 [his mother] Anne Duncombe Countess Radnor (age 70) died.
On 16 Dec 1830 [his brother-in-law] Venerable Carew Antony St John Milmay (age 30) and Caroline Waldegrave (age 32) were married. She a great x 3 granddaughter of King James II of England Scotland and Ireland. 
On 29 Apr 1832 [his brother-in-law] Captain George William St John-Mildmay (age 40) and Mary Baillie (age 30) were married at St George's Church, Hanover Square.
On 26 Jun 1832 [his son] Stillborn Pleydell-Bouverie was born to William Pleydell-Bouverie 3rd Earl Radnor (age 53) and [his wife] Judith St John-Mildmay Countess Radnor (age 42).
On 31 Jul 1835 [his brother-in-law] Reverend Walter St John Milmay (age 36) died without issue.
On 21 Dec 1836 [his sister-in-law] Maria St John-Mildmay Viscountess Bolingbroke and St John (age 46) died.
On 30 Oct 1840 [his son] Jacob Pleydell-Bouverie 4th Earl Radnor (age 25) and [his daughter-in-law] Mary Augusta Frederica Grimston Countess Radnor (age 19) were married. She the daughter of James Walter Grimston 1st Earl Verulam (age 65) and Charlotte Jenkinson Countess Verulam. He the son of William Pleydell-Bouverie 3rd Earl Radnor (age 61) and Judith St John-Mildmay Countess Radnor (age 50).
On 01 Nov 1842 [his son] Edward Pleydell-Bouverie (age 24) and [his daughter-in-law] Elizabeth Anne Balfour (age 22) were married. He the son of William Pleydell-Bouverie 3rd Earl Radnor (age 63) and Judith St John-Mildmay Countess Radnor (age 52).
On 19 May 1845 [his brother-in-law] Paulet St John-Mildmay (age 54) died.
On 15 Mar 1846 [his sister-in-law] Jane Dorothea Mildmay (age 57) died.
On 17 Apr 1848 [his brother-in-law] Henry St John-Mildmay 4th Baronet (age 61) shot himself. His son Henry St John-Mildmay 5th Baronet (age 38) succeeded 5th Baronet St John-Mildmay of Farley in Southampton.
On 14 Feb 1851 [his brother-in-law] Captain George William St John-Mildmay (age 58) died.
On 27 Apr 1851 [his wife] Judith St John-Mildmay Countess Radnor (age 61) died.
On 09 Aug 1853 [his former brother-in-law] Humphrey St John-Mildmay (age 59) died.
On 16 May 1868 [his former brother-in-law] Captain Edward St John-Mildmay (age 70) died.
On 09 Apr 1869 William Pleydell-Bouverie 3rd Earl Radnor (age 89) died. His son [his son] Jacob Pleydell-Bouverie 4th Earl Radnor (age 53) succeeded 4th Earl Radnor, 5th Viscount Folkestone, 5th Baron Longford, 7th Baronet Bouverie of St Catherine Cree Church in London. [his daughter-in-law] Mary Augusta Frederica Grimston Countess Radnor (age 47) by marriage Countess Radnor.
Humphrey St John-Mildmay and Anne Eugenia Baring were married.
Great x 3 Grandfather: Edward des Bouverie
Great x 2 Grandfather: William des Bouverie 1st Baronet
Great x 4 Grandfather: Jacob de la Forterie
Great x 3 Grandmother: Anne de la Foterie
Great x 1 Grandfather: Jacob Bouverie 1st Viscount Folkestone
Great x 4 Grandfather: John Urry of Mill Place, Isle of Wight
Great x 3 Grandfather: David Urry
Great x 2 Grandmother: Anne Urry Lady Bouverie
GrandFather: William Pleydell-Bouverie 1st Earl Radnor
Great x 2 Grandfather: Bartholemew Clarke
Great x 1 Grandmother: Mary Clarke
Father: Jacob Pleydell-Bouverie 2nd Earl Radnor
Great x 1 Grandfather: Mark Stuart Pleydell
GrandMother: Harriet Pleydell
William Pleydell-Bouverie 3rd Earl Radnor
Great x 4 Grandfather: William Duncombe
Great x 3 Grandfather: William Duncome
Great x 2 Grandfather: Alexander Duncombe of Drayton Bucks
Great x 1 Grandfather: Anthony Duncombe
GrandFather: Anthony Duncombe 1st Baron Feversham
Mother: Anne Duncombe Countess Radnor
Great x 4 Grandfather: Robert Hales 1st Baronet
Great x 3 Grandfather: Thomas Hales of Howletts
Great x 2 Grandfather: Thomas Hales 2nd Baronet
Great x 1 Grandfather: Thomas Hales 3rd Baronet
GrandMother: Anne Hales Baroness Feversham Downton