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Cornwallis, Earl (GB, 1753 - 1852)


Creation: let.pat. 30 Jun 1753


Extinct: 21 May 1852


Family name: Cornwallis later Mann




See Marquess Cornwallis



Charles [Cornwallis], 5th Baron Cornwallis later 1st Earl Cornwallis, PC

1st son and heir of Charles [Cornwallis], 4th Baron Cornwallis, by his wife Lady Charlotte Butler, dau. and sole hrss. by his second wife of Richard [Butler], 1st Earl of Arran


29 Mar 1700


28 Nov 1722 Hon Elizabeth Townshend (d. 1 Dec 1785), 1st dau. of Charles [Townshend], 2nd Viscount Townshend, by his first wife Hon Elizabeth Pelham, only dau. and hrss, by his first wife of Thomas [Pelham], 1st Baron Pelham


1. Hon Charles Cornwallis, later 2nd Earl Cornwallis later 1st Marquess Cornwallis

2. Hon James Cornwallis (b. 10 Sep 1740; dvp. Apr 1761)

3. Rt Rev Hon James Cornwallis DD, Bishop of Lichfield and Coventry later 4th Earl Cornwallis

4. Admiral Hon Sir William Cornwallis GCB, Admiral of the Red (b. 1743/4; d. 1819)

1. Lady Elizabeth Cornwallis (d. 20 Mar 1796), mar. Jul 1753 Bowen Southwell

2. Lady Charlotte Cornwallis (d. 11 Mar 1794), mar. Rt Rev Spencer Madan DD, Bishop of Peterborough

3. Lady Mary Cornwallis (d. Dec 1770), mar. as his second wife Samuel Whitbread MP, of Cardington and Southill, co. Bedford, the eminent brewer, and had issue


23 Jun 1762


30 Jun 1753 Viscount Brome, of Brome in the County of Suffolk, and Earl Cornwallis

suc. by



suc. his father 20 Jan 1721/2 as 5th Baron Cornwallis; Groom of the Bedchamber 1721-22; Chief Justice in Eyre, South of Trent 1722-40; Constable of the Tower and Lord Lieutenant of the Tower Hamlets 1740-62; Privy Councillor 1740


Charles [Cornwallis], 2nd Earl Cornwallis later 1st Marquess Cornwallis, KG PC


8 Oct 1792 Marquess Cornwallis


The Earldom of Cornwallis was held by the Marquesses Cornwallis from 8 Oct 1792 until 9 Aug 1823, when on the death of Charles [Cornwallis], 2nd Marquess Cornwallis, 3rd Earl Cornwallis, etc., without a son, the Marquessate of Cornwallis became extinct and the Earldom of Cornwallis, etc. was inherited by his uncle,


James [Cornwallis], 4th Earl Cornwallis


25 Feb 1742/3


30 Apr 1771 Catherine Mann (b. 1742; d. 17 Apr 1811), sister of Sir Horace Mann, 1st Bt., and dau. of Galfridus Mann, of Egerton, co. Kent, by his wife Sarah Gregory, dau. of John Gregory, of London

only child

1. Hon James Cornwallis, later 4th Earl Cornwallis


20 Jan 1824

suc. by



Rector of Ickham, co. Kent 1769-73; Rector of Addisham-with-Staple, co. Kent 1770-81; Prebend of Westminster 1770-75; Rector of Newington, co. Oxford 1770; Vicar of Wrotham, co. Kent 1771-85; Rector of Boughton Malerbe, co. Kent 1773-85; Dean of Canterbury 1775-81; Bishop of Lichfield and Coventry 1721-84; Dean of Windsor 1791-94; Dean of Durham 1794-1824


James [Cornwallis later Mann], 5th Earl Cornwallis


20 Sep 1778

mar. (1)

18 Dec 1804 Maria Isabella Dickens (d. 16 Jan 1823), 1st dau. of Francis Dickens, of Woollaston House, co. Northampton

children by first wife

1. Hon Charles James Cornwallis later Mann, styled Viscount Brome (b. 17 Dec 1813; dvp. 27 Dec 1835)

1. Lady Jemima Isabella Cornwallis (d. 17 Dec 1836). mar. 12 Apr 1828 as his first wife Charles Wykeham-Martin MP JP DL, of Leeds Castle, co. Kent, and Chacombe Priory, co. Northampton (b. 11 Sep 1801; d. 30 Oct 1870), 1st son and heir of Fiennes Wykeham later Wykeham-Martin, of Leeds Castle, co. Kent, and Chacombe Priory, co. Northampton (by his wife Eliza Bignell, dau. of Richard Bignell, of Doddington, co. Oxford), 1st son and heir of Rev Richard Wykeham, Vicar of Sulgrave and of Chacombe, co. Northampton, Rector of Newton Purcell, co. Oxford (by his wife Mary Fox, only surv. dau. of Charles Fox, of Chacombe Priory, co. Northampton), 3rd son of Richard Wykeham, of Swalcliffe, co. Oxford, by his wife Hon Vere Alicia Fiennes, sister and hrss. of Richard [Fiennes], 6th Viscount Saye and Sele, and only dau. of Rev Richard Fiennes, Rector of Arkeley, co. Buckingham (by his wife Penelope Chamberlayne, dau. of George Chamberlayne, of Wardington, co. Oxford), only son of Hon Richard Fiennes, of Ickworth, co. Suffolk (by his second wife Susanna Cobb, dau. of William Cobb, of Adderbury, co. Oxford), 4th son of William [Fiennes], 1st Vicount Saye and Sele, and had issue:

1a. Philip Wykeham-Martin MP JP DL, of Leeds Castle, co. Kent, Chacombe Priory, co. Northampton, and Packwood Hall, co. Warwick (b. 18 Jan 1829; d. 31 May 1878), mar. 27 Nov 1850 Elizabeth Ward, dau. of John Ward, and had issue

2a. Maj Fiennes Wykeham-Martin later Cornwallis (b. 1 Nov 1831; d. 24 Apr 1867), mar. 29 Jul 1863 Harriet Elizabeth Mott (b. 1844; mar. (2) Rev Arthur Edward Robinson, Rector of Wootton, co. Oxford; d. 1928), 1st dau. of John Thomas Mott, of Barningham Hall, co. Norfolk, by his wife Caroline Sloane-Stanley, dau. of William Sloane-Stanley, of Paultons, co. Hampshire (by his wife Lady Gertrude Howard, 3rd dau. of Frederick [Howard], 5th Earl of Carlisle, by his wife Lady Margaret Caroline Leveson-Gower, 2nd dau. of Granville [Leveson-Gower], 1st Marquess of Stafford, by his second wife Lady Louisa Egerton, 1st dau. and cohrss. in her issue by his second wife of Scrope [Egerton], 1st Duke of Bridgewater), 1st son and heir of Hans Sloane later Sloane-Stanley MP, of South Stoneham, co. Hampshire (by his wife and cousin Sarah Fuller, dau. of Stephen Fuller, of Bloomsbury, co. Middlesex), only son and heir of William Sloane, of Chelsea, co. Middlesex, and Stoneham, co. Hampshire (by his third wife Elizabeth Fuller, only dau. of John Fuller, of Brightling, co. Sussex), only son of William Sloane, of Chelsea, co. Middlesex (by his wife Jane Hamilton, dau. of Hugh Hamiton, of Ballybrenagh, Co. Down), younger brother of Sir Hans Sloane, 1st Bt., of Chelsea, co. Middlesex, and 2nd son of Alexander Sloane, of Killeleagh, Co. Down), and had issue:

1b. Col Fiennes Stanley Wykeham Cornwallis CBE TD JP DL MP, later 1st Baron Cornwallis

2b. Arthur Wykeham Cornwallis (b. 24 Apr 1865; d. 9 Feb 1952), mar. 1890 Marcia Blanche Florence Bower (d. 28 Jul 1939), dau. of Robert Hartley Bower JP DL, of Welham, co. York, by his wife Marcia Lister-Kaye, 1st dau. by his first wife of Sir John Lister-Kaye, 2nd Bt., and had issue

1b. Helen Florence Cornwallis (d. unm. 5 Sep 1957)

2b. Caroline Vere Cornwallis (d. unm. 13 Nov 1909)

3a. Cmdr Cornwallis Wykeham-Martin JP RN, of The Hill, Purton, co. Wiltshire (b. 10 Jun 1833; d. 28 Apr 1903). mar. 24 Jan 1861 Anne Katherine Rolls (d, 27 May 1912), dau. of John E W Rolls, of The Hendre, co. Monmouth, and had issue

1a. Maria Wykeham-Martin (d. unm. 16 Feb 1900)

mar. (2)

22 Jan 1829 Laura Hayes (dsp. 3 Aug 1840) , dau. of William Hayes

mar. (3)

4 Aug 1842 Julia Bacon (d. 4 Nov 1847), 4th dau. of Thomas Bacon, of Redlands, co. Berkshire

only child by third wife

2. Lady Julia Cornwallis (b. 2 Jul 1844; dsp. 1 Sep 1883), mar. 27 Aug 1862 as his first wife William Archer [Amherst], 3rd Earl Amherst


s.p.m.s. 21 May 1852


Member of Parliament (Tory) for Eye 1799-1806 and 1807; took the name of Mann in lieu of Cornwallis by Royal Licence 1814 on the death of his maternal uncle Sir Horace Mann, 1st Bt.


On the death of the 5th Earl Cornwallis all his titles became extinct.  In 1927 the Barony of Cornwallis was created afresh for his great-grandson, Col Fiennes Cornwallis CBE.


Last updated 7 Sep 2022 



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