Marquess of Londonderry, of the County of Londonderry (/ˈlʌndəndreɪ/ LUN-dən-dree), is a title in the Peerage of Ireland.
Marquessate of Londonderry | |
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![]() ![]() Arms: Quarterly: 1st & 4th, Or, a Bend counter-company Argent and Azure, between two Lions rampant Gules (Stewart); 2nd, Argent, a Bend engrailed between six Martlets Sable (Tempest); 3rd, Azure, three sinister Gauntlets Or (Vane). Crests: Centre: A Dragon statant Or (Stewart); Dexter: A Griffin’s Head erased per pale Argent and Sable, beaked Gules (Tempest); Sinister: A dexter Cubit Arm in Armour, the hand in a Gauntlet proper, graping a Sword proper, pommel and hilt Or (Vane). Supporters: Dexter: A Moor proper, wreathed about the temples Argent and Azure, holding in the exterior hand a Shield Azure, garnished Or, and charged with a Sun-in-Splendour Gold; Sinister: A Lion Or, gorged with a Collar Argent, charged with three Mullets Sable. | |
Creation date | 13 January 1816 |
Created by | The Prince Regent (acting on behalf of his father King George III) |
Peerage | Peerage of Ireland |
First holder | Robert Stewart, 1st Earl of Londonderry |
Present holder | Frederick Vane-Tempest-Stewart, 10th Marquess |
Heir presumptive | Lord Reginald Vane-Tempest-Stewart |
Subsidiary titles | Earl of Londonderry Earl Vane (United Kingdom) Viscount Castlereagh Viscount Seaham (United Kingdom) Baron Londonderry Baron Stewart (United Kingdom) |
Status | Extant |
Former seat(s) | Mount Stewart Plas Machynlleth Seaham Hall Wynyard Hall |
Motto | METUENDA COROLLA DRACONIS (The dragon’s crest is to be feared) |

History
The title was created in 1816 for Robert Stewart, 1st Earl of Londonderry. He had earlier represented County Down in the Irish House of Commons. Stewart had already been created Baron Londonderry in 1789, Viscount Castlereagh, of Castlereagh in the County of Down, in 1795 and Earl of Londonderry, of the County of Londonderry, in 1796. These titles are also in the Peerage of Ireland.
He was the son of Alexander Stewart, who had married Mary Cowan, sister and heiress of Robert Cowan, who gained great wealth as Governor of Bombay from 1729 to 1737. Alexander was from Ballylawn, a townland at the south-west corner of Inishowen in the north of County Donegal, a county located in the west of Ulster in the northern part of Ireland. However, much of the Stewart family's wealth was based on the estates which came into the family through this marriage.
The 1st Marquess was one of the few people to become a Marquess without inheriting any titles prior to the creation. He sat in the British House of Lords as one of the twenty-eight original Irish representative peer from 1800 to 1821. He was succeeded by his son from his first marriage to Lady Sarah Seymour. The 2nd Marquess, better known as Lord Castlereagh (he went by the courtesy title of Viscount Castlereagh from 1796 to 1821), was a noted statesman and diplomat. Castlereagh is best remembered for his tenure as Foreign Secretary of the United Kingdom from 1812 to 1822 and played an important role at the Congress of Vienna of 1814 to 1815. He committed suicide in 1822, one year after succeeding his father in the marquessate. The 2nd Marquess did not follow his father as a Representative Peer into the House of Lords, this permitted him to continue fulfilling his roles in the House of Commons.
Castlereagh was succeeded by his half-brother, the 3rd Marquess. He was the only son from the 1st Marquess's second marriage to Lady Frances Pratt, daughter of Charles Pratt, 1st Earl Camden. He was a General in the Army and like his elder half-brother a prominent politician and diplomat. Lord Londonderry served as Under-Secretary of State for War and the Colonies from 1807 to 1809, fought in the Napoleonic Wars and was Ambassador to Austria from 1814 to 1823. In 1814 he was created Baron Stewart, of Stewart's Court and Ballylawn in County Donegal, in the Peerage of the United Kingdom. In 1819 Londonderry married as his second wife Frances Anne Vane-Tempest (died 1865), daughter and wealthy heiress of Sir Henry Vane-Tempest, 2nd Baronet, through which marriage substantial estates in County Durham came into the Stewart family. He assumed the additional surname of Vane on his marriage and in 1823 he was created Viscount Seaham, of Seaham in the County Palatine of Durham, and Earl Vane, with remainder to the male issue of his second marriage. These titles are in the Peerage of the United Kingdom.
Lord Londonderry was succeeded in the viscountcy of Seaham and earldom of Vane according to the special remainder by his eldest son from his second marriage while he was succeeded in the Irish titles and the barony of Stewart by his son from his first marriage to Lady Catherine Bligh, the 4th Marquess. He died childless in 1872 and was succeeded by his half-brother, the 5th Marquess, who had already succeeded his father as second Earl Vane in 1854. He represented Durham North in the House of Commons and served as Lord-Lieutenant of County Durham. In 1851 the 5th Marquess assumed by Royal licence the additional surname of Tempest. On his death, the titles passed to his eldest son, the 6th Marquess. He was a Conservative politician and held office in the administrations of Lord Salisbury and Arthur Balfour as Lord-Lieutenant of Ireland, as Postmaster General, as President of the Board of Education, as Lord Privy Seal and as Lord President of the Council. In 1885 he assumed by Royal licence the additional and principal surname of Stewart.
He was succeeded by his son, the 7th Marquess, who was also a Conservative politician. He had a career in both Irish and British politics but is best known for his role as Secretary of State for Air from 1931 to 1935. Lord Londonderry subsequently gained notoriety for his informal diplomatic contacts with senior members of the German government. He made six visits to Nazi Germany between January 1936 and September 1938 meeting Adolf Hitler on a number of occasions and sympathising with some of his viewpoints. His wife Edith Vane-Tempest-Stewart, Marchioness of Londonderry, was an influential society hostess remembered for her close friendship with Ramsay MacDonald. Lord Londonderry was succeeded by his son, the 8th Marquess. He represented County Down in the House of Commons as a Conservative from 1931 to 1945.
The heir apparent to the marquessate is styled Viscount Castlereagh, although the Marquess is also the Earl Vane, and the heir apparent's heir apparent, when such exists, is styled Lord Stewart.[citation needed]
Between 1823 and 1854 and between 1872 and 1999, the Marquesses of Londonderry sat in the House of Lords as The Earl Vane. Between 1822 and 1823 and between 1854 and 1872, they sat as The Lord Stewart.
Residences
The principal family seats were Mount Stewart, near Newtownards, County Down, Northern Ireland, and the Wynyard Park estate in County Durham. Other properties included Seaham Hall in County Durham, as well as Londonderry House on Park Lane in London (where the Londonderry Hotel was later located), and Plas Machynlleth in mid-Wales.
Marquesses of Londonderry (1816)
- Robert Stewart, 1st Marquess of Londonderry (1739–1821)
- Robert Stewart, 2nd Marquess of Londonderry (1769–1822)
- Charles William Stewart, 3rd Marquess of Londonderry (1778–1854)
- Frederick William Robert Stewart, 4th Marquess of Londonderry (1805–1872)
- George Henry Robert Charles William Vane-Tempest, 5th Marquess of Londonderry (1821–1884)

- Charles Stewart Vane-Tempest-Stewart, 6th Marquess of Londonderry (1852–1915)
- Charles Stewart Henry Vane-Tempest-Stewart, 7th Marquess of Londonderry (1878–1949)
- Edward Charles Stewart Robin Vane-Tempest-Stewart, 8th Marquess of Londonderry (1902–1955)
- Alexander Charles Robert "Alistair" Vane-Tempest-Stewart, 9th Marquess of Londonderry (1937–2012)
- Frederick Aubrey Vane-Tempest-Stewart, 10th Marquess of Londonderry (born 1972)
The 4th Marquess did not inherit the Seaham viscountcy and Vane earldom as he was not the heir male of the 3rd Marquess's second wife, a limitation of the remainder of those peerages.
Present peer
Frederick Aubrey Vane-Tempest-Stewart, 10th Marquess of Londonderry (born 6 September 1972), is the son of the 9th Marquess and his wife, Doreen Patricia Wells, who was a ballerina with the Royal Ballet between 1955 and 1974. He was styled as Viscount Castlereagh from birth and later as Earl Vane.
On 20 June 2012, Earl Vane succeeded his father as Marquess of Londonderry (I., 1816), Earl of Londonderry (I., 1796), Earl Vane (U.K., 1823), Viscount Castlereagh (I., 1795), Viscount Seaham of Seaham (U.K., 1823), Baron Stewart of Stewart's Court and Ballylawn (U.K., 1814), and Baron Londonderry (I., 1789).
The heir presumptive is Londonderry's brother, Lord Reginald Alexander Vane-Tempest-Stewart (born 1977), whose heir apparent is his son Robin Gabriel Vane-Tempest-Stewart (born 2004).
Line of succession (simplified)
Charles William Vane, 3rd Marquess of Londonderry, 1st Earl Vane, 1st Viscount Seaham, 1st Baron Stewart (1778–1854)
Frederick Stewart, 4th Marquess of Londonderry (1805–1872)
George Henry Robert Charles William Vane-Tempest, 5th Marquess of Londonderry, 2nd Earl Vane, 2nd Viscount Seaham, 3rd Baron Stewart (1821–1884)
Charles Stewart Vane-Tempest-Stewart, 6th Marquess of Londonderry (1852–1915)
Charles Stewart Henry Vane-Tempest-Stewart, 7th Marquess of Londonderry (1878–1949)
Edward Charles Robert Vane-Tempest-Stewart, 8th Marquess of Londonderry (1902–1955)
Alexander Charles Robert Vane-Tempest-Stewart, 9th Marquess of Londonderry (1937–2012)
Frederick Aubrey Vane-Tempest-Stewart, 10th Marquess of Londonderry (born 1972)
- (1) Lord Reginald Alexander Vane-Tempest-Stewart (b. 1977)
- (2) Robin Gabriel Vane-Tempest-Stewart (b. 2004)
- Lord Ernest McDonnell Vane-Tempest (1836–1885)
- Charles Henry Vane-Tempest (1871–1899)
- Ernest Charles William Vane-Tempest (1894–1957)
- Charles Stewart McDonnell Vane-Tempest (1921–2008)
- (3) Charles Stewart Martin St. George Vane-Tempest (b. 1950)
- (4) Christopher James Stewart St. George Vane-Tempest (b. 1978)
- (5) James Alexander Stewart Vane-Tempest (b. 1981)
- (6) George Frederick Stewart Vane-Tempest (b. 2012)
- (7) Harry John Stewart Vane-Tempest (b. 2014)
- (8) Charles Erkki William Vane-Tempest (b. 1958)
- (9) Charles Petter Vane-Tempest (b. 1990)
- (10) Donald John Ernest Vane-Tempest (b. 1961)
- (11) Thomas Christopher Vane-Tempest (b. 1986)
- (12) Harold Michael St. George Vane-Tempest (b. 1962)
- (13) John Michael Vane-Tempest (b. 1990)
- (14) Timothy Alexander Vane-Tempest (b. 1992)
- (3) Charles Stewart Martin St. George Vane-Tempest (b. 1950)
- Charles Stewart McDonnell Vane-Tempest (1921–2008)
- Ernest Charles William Vane-Tempest (1894–1957)
- Charles Henry Vane-Tempest (1871–1899)
Family tree
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See also
- Baron Plunket
- Durham County Record Office: where the records of County Durham estates are held
Notes
- The pronunciation of the family name differs from that of the place
References
- "No. 17104". The London Gazette. 30 January 1816. p. 173.
- Montague-Smith, Patrick (1970). Debrett's Correct Form (1992 ed.). Debrett's Peerage. p. 401. ISBN 978-0-7472-0658-3.
- "No. 13131". The London Gazette. 15 September 1789. p. 597.
- "No. 13821". The London Gazette. 13 October 1795. p. 1052.
- "Castlereagh". The Parliamentary gazetteer of Ireland. Vol. I: A-C. Dublin: A. Fullarton. 1846. p. 372.
- "No. 13922". The London Gazette. 16 August 1796. p. 781.
- "No. 16909". The London Gazette. 18 June 1814. p. 1255.
- "No. 17909". The London Gazette. 29 March 1823. p. 498.
- Fleming, Neil C. (2005), The Marquess of Londonderry: aristocracy, power and politics in Britain and Ireland, I.B.Tauris, pp. 185–198, ISBN 978-1-85043-726-0
- "The Marquess of Londonderry", Daily Telegraph, 20 June 2012. Retrieved 6 October 2012.
- Burke's Peerage, volume 2, 2003, p. 2383
- Morris, Susan; Bosberry-Scott, Wendy; Belfield, Gervase, eds. (2019). "Londonderry, Marquess of". Debrett's Peerage and Baronetage. Vol. 1 (150th ed.). London: Debrett's Ltd. pp. 2221–2224. ISBN 978-1-999767-0-5-1.
Works cited
- Kidd, Charles, Williamson, David (editors). Debrett's Peerage and Baronetage (1990 edition). New York: St Martin's Press, 1990, [page needed]
- Leigh Rayment's Peerage Pages [self-published source] [better source needed]
External links

- European Heraldry page
Author: www.NiNa.Az
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Marquess of Londonderry of the County of Londonderry ˈ l ʌ n d en d r eɪ LUN den dree is a title in the Peerage of Ireland Marquessate of LondonderryArms Quarterly 1st amp 4th Or a Bend counter company Argent and Azure between two Lions rampant Gules Stewart 2nd Argent a Bend engrailed between six Martlets Sable Tempest 3rd Azure three sinister Gauntlets Or Vane Crests Centre A Dragon statant Or Stewart Dexter A Griffin s Head erased per pale Argent and Sable beaked Gules Tempest Sinister A dexter Cubit Arm in Armour the hand in a Gauntlet proper graping a Sword proper pommel and hilt Or Vane Supporters Dexter A Moor proper wreathed about the temples Argent and Azure holding in the exterior hand a Shield Azure garnished Or and charged with a Sun in Splendour Gold Sinister A Lion Or gorged with a Collar Argent charged with three Mullets Sable Creation date13 January 1816Created byThe Prince Regent acting on behalf of his father King George III PeeragePeerage of IrelandFirst holderRobert Stewart 1st Earl of LondonderryPresent holderFrederick Vane Tempest Stewart 10th MarquessHeir presumptiveLord Reginald Vane Tempest StewartSubsidiary titlesEarl of Londonderry Earl Vane United Kingdom Viscount Castlereagh Viscount Seaham United Kingdom Baron Londonderry Baron Stewart United Kingdom StatusExtantFormer seat s Mount Stewart Plas Machynlleth Seaham Hall Wynyard HallMottoMETUENDA COROLLA DRACONIS The dragon s crest is to be feared Robert Stewart Viscount Castlereagh British Foreign Secretary who became the second Marquess of Londonderry in 1821HistoryThe title was created in 1816 for Robert Stewart 1st Earl of Londonderry He had earlier represented County Down in the Irish House of Commons Stewart had already been created Baron Londonderry in 1789 Viscount Castlereagh of Castlereagh in the County of Down in 1795 and Earl of Londonderry of the County of Londonderry in 1796 These titles are also in the Peerage of Ireland He was the son of Alexander Stewart who had married Mary Cowan sister and heiress of Robert Cowan who gained great wealth as Governor of Bombay from 1729 to 1737 Alexander was from Ballylawn a townland at the south west corner of Inishowen in the north of County Donegal a county located in the west of Ulster in the northern part of Ireland However much of the Stewart family s wealth was based on the estates which came into the family through this marriage The 1st Marquess was one of the few people to become a Marquess without inheriting any titles prior to the creation He sat in the British House of Lords as one of the twenty eight original Irish representative peer from 1800 to 1821 He was succeeded by his son from his first marriage to Lady Sarah Seymour The 2nd Marquess better known as Lord Castlereagh he went by the courtesy title of Viscount Castlereagh from 1796 to 1821 was a noted statesman and diplomat Castlereagh is best remembered for his tenure as Foreign Secretary of the United Kingdom from 1812 to 1822 and played an important role at the Congress of Vienna of 1814 to 1815 He committed suicide in 1822 one year after succeeding his father in the marquessate The 2nd Marquess did not follow his father as a Representative Peer into the House of Lords this permitted him to continue fulfilling his roles in the House of Commons Castlereagh was succeeded by his half brother the 3rd Marquess He was the only son from the 1st Marquess s second marriage to Lady Frances Pratt daughter of Charles Pratt 1st Earl Camden He was a General in the Army and like his elder half brother a prominent politician and diplomat Lord Londonderry served as Under Secretary of State for War and the Colonies from 1807 to 1809 fought in the Napoleonic Wars and was Ambassador to Austria from 1814 to 1823 In 1814 he was created Baron Stewart of Stewart s Court and Ballylawn in County Donegal in the Peerage of the United Kingdom In 1819 Londonderry married as his second wife Frances Anne Vane Tempest died 1865 daughter and wealthy heiress of Sir Henry Vane Tempest 2nd Baronet through which marriage substantial estates in County Durham came into the Stewart family He assumed the additional surname of Vane on his marriage and in 1823 he was created Viscount Seaham of Seaham in the County Palatine of Durham and Earl Vane with remainder to the male issue of his second marriage These titles are in the Peerage of the United Kingdom Lord Londonderry was succeeded in the viscountcy of Seaham and earldom of Vane according to the special remainder by his eldest son from his second marriage while he was succeeded in the Irish titles and the barony of Stewart by his son from his first marriage to Lady Catherine Bligh the 4th Marquess He died childless in 1872 and was succeeded by his half brother the 5th Marquess who had already succeeded his father as second Earl Vane in 1854 He represented Durham North in the House of Commons and served as Lord Lieutenant of County Durham In 1851 the 5th Marquess assumed by Royal licence the additional surname of Tempest On his death the titles passed to his eldest son the 6th Marquess He was a Conservative politician and held office in the administrations of Lord Salisbury and Arthur Balfour as Lord Lieutenant of Ireland as Postmaster General as President of the Board of Education as Lord Privy Seal and as Lord President of the Council In 1885 he assumed by Royal licence the additional and principal surname of Stewart He was succeeded by his son the 7th Marquess who was also a Conservative politician He had a career in both Irish and British politics but is best known for his role as Secretary of State for Air from 1931 to 1935 Lord Londonderry subsequently gained notoriety for his informal diplomatic contacts with senior members of the German government He made six visits to Nazi Germany between January 1936 and September 1938 meeting Adolf Hitler on a number of occasions and sympathising with some of his viewpoints His wife Edith Vane Tempest Stewart Marchioness of Londonderry was an influential society hostess remembered for her close friendship with Ramsay MacDonald Lord Londonderry was succeeded by his son the 8th Marquess He represented County Down in the House of Commons as a Conservative from 1931 to 1945 The heir apparent to the marquessate is styled Viscount Castlereagh although the Marquess is also the Earl Vane and the heir apparent s heir apparent when such exists is styled Lord Stewart citation needed Between 1823 and 1854 and between 1872 and 1999 the Marquesses of Londonderry sat in the House of Lords as The Earl Vane Between 1822 and 1823 and between 1854 and 1872 they sat as The Lord Stewart ResidencesThe principal family seats were Mount Stewart near Newtownards County Down Northern Ireland and the Wynyard Park estate in County Durham Other properties included Seaham Hall in County Durham as well as Londonderry House on Park Lane in London where the Londonderry Hotel was later located and Plas Machynlleth in mid Wales Marquesses of Londonderry 1816 Robert Stewart 1st Marquess of Londonderry 1739 1821 Robert Stewart 2nd Marquess of Londonderry 1769 1822 Charles William Stewart 3rd Marquess of Londonderry 1778 1854 Frederick William Robert Stewart 4th Marquess of Londonderry 1805 1872 George Henry Robert Charles William Vane Tempest 5th Marquess of Londonderry 1821 1884 Arms of the 6th Marquess Charles Stewart Vane Tempest Stewart 6th Marquess of Londonderry 1852 1915 Charles Stewart Henry Vane Tempest Stewart 7th Marquess of Londonderry 1878 1949 Edward Charles Stewart Robin Vane Tempest Stewart 8th Marquess of Londonderry 1902 1955 Alexander Charles Robert Alistair Vane Tempest Stewart 9th Marquess of Londonderry 1937 2012 Frederick Aubrey Vane Tempest Stewart 10th Marquess of Londonderry born 1972 The 4th Marquess did not inherit the Seaham viscountcy and Vane earldom as he was not the heir male of the 3rd Marquess s second wife a limitation of the remainder of those peerages Present peerFrederick Aubrey Vane Tempest Stewart 10th Marquess of Londonderry born 6 September 1972 is the son of the 9th Marquess and his wife Doreen Patricia Wells who was a ballerina with the Royal Ballet between 1955 and 1974 He was styled as Viscount Castlereagh from birth and later as Earl Vane On 20 June 2012 Earl Vane succeeded his father as Marquess of Londonderry I 1816 Earl of Londonderry I 1796 Earl Vane U K 1823 Viscount Castlereagh I 1795 Viscount Seaham of Seaham U K 1823 Baron Stewart of Stewart s Court and Ballylawn U K 1814 and Baron Londonderry I 1789 The heir presumptive is Londonderry s brother Lord Reginald Alexander Vane Tempest Stewart born 1977 whose heir apparent is his son Robin Gabriel Vane Tempest Stewart born 2004 Line of succession simplified Charles William Vane 3rd Marquess of Londonderry 1st Earl Vane 1st Viscount Seaham 1st Baron Stewart 1778 1854 Frederick Stewart 4th Marquess of Londonderry 1805 1872 George Henry Robert Charles William Vane Tempest 5th Marquess of Londonderry 2nd Earl Vane 2nd Viscount Seaham 3rd Baron Stewart 1821 1884 Charles Stewart Vane Tempest Stewart 6th Marquess of Londonderry 1852 1915 Charles Stewart Henry Vane Tempest Stewart 7th Marquess of Londonderry 1878 1949 Edward Charles Robert Vane Tempest Stewart 8th Marquess of Londonderry 1902 1955 Alexander Charles Robert Vane Tempest Stewart 9th Marquess of Londonderry 1937 2012 Frederick Aubrey Vane Tempest Stewart 10th Marquess of Londonderry born 1972 1 Lord Reginald Alexander Vane Tempest Stewart b 1977 2 Robin Gabriel Vane Tempest Stewart b 2004 Lord Ernest McDonnell Vane Tempest 1836 1885 Charles Henry Vane Tempest 1871 1899 Ernest Charles William Vane Tempest 1894 1957 Charles Stewart McDonnell Vane Tempest 1921 2008 3 Charles Stewart Martin St George Vane Tempest b 1950 4 Christopher James Stewart St George Vane Tempest b 1978 5 James Alexander Stewart Vane Tempest b 1981 6 George Frederick Stewart Vane Tempest b 2012 7 Harry John Stewart Vane Tempest b 2014 8 Charles Erkki William Vane Tempest b 1958 9 Charles Petter Vane Tempest b 1990 10 Donald John Ernest Vane Tempest b 1961 11 Thomas Christopher Vane Tempest b 1986 12 Harold Michael St George Vane Tempest b 1962 13 John Michael Vane Tempest b 1990 14 Timothy Alexander Vane Tempest b 1992 Family tree vteMarquess of Londonderry family tree Alexander Stewart 1699 1781 Baron Londonderry 2nd creation 1789 Viscount Castlereagh 1795 Earl of Londonderry 3rd creation 1796 Marquess of Londonderry 1816 Sarah Frances Seymour 1747 1770Robert Stewart 1739 1821 1st Marquess of Londonderry Earl of Londonderry Viscount Castlereagh and Baron LondonderryFrances Pratt c 1751 1833 Baron Stewart 1814 Earl Vane and Viscount Seaham 1823 Robert Stewart 1769 1822 2nd Marquess of Londonderry Earl of Londonderry Viscount Castlereagh and Baron LondonderryCatherine Bligh d 1812Charles William Vane ne Stewart 1778 1854 3rd Marquess of Londonderry Earl of Londonderry Viscount Castlereagh and Baron Londonderry 1st Earl Vane Viscount Seaham and Baron StewartFrances Anne Vane 1800 1865 Frederick William Robert Stewart 1805 1872 4th Marquess of Londonderry Earl of Londonderry Viscount Castlereagh and Baron LondonderryGeorge Henry Robert Charles William Vane Tempest 1821 1884 5th Marquess of Londonderry Earl of Londonderry Viscount Castlereagh and Baron Londonderry 2nd Earl Vane Viscount Seaham and Baron Stewart Charles Stewart Vane Tempest Stewart 1852 1915 6th Marquess of Londonderry Earl of Londonderry Viscount Castlereagh and Baron Londonderry 3rd Earl Vane Viscount Seaham and Baron Stewart Charles Stewart Henry Vane Tempest Stewart 1878 1949 7th Marquess of Londonderry Earl of Londonderry Viscount Castlereagh and Baron Londonderry 4th Earl Vane Viscount Seaham and Baron Stewart Edward Charles Stewart Robert Robin Vane Tempest Stewart 1902 1955 8th Marquess of Londonderry Earl of Londonderry Viscount Castlereagh and Baron Londonderry 5th Earl Vane Viscount Seaham and Baron Stewart Alexander Charles Robert Alastair Vane Tempest Stewart 1937 2012 9th Marquess of Londonderry Earl of Londonderry Viscount Castlereagh and Baron Londonderry 6th Earl Vane Viscount Seaham and Baron Stewart Frederick Vane Tempest Stewart b 1972 10th Marquess of Londonderry Earl of Londonderry Viscount Castlereagh and Baron Londonderry 7th Earl Vane Viscount Seaham and Baron Stewartb 1977 Heir presumptive to all titlesSee alsoBaron Plunket Durham County Record Office where the records of County Durham estates are heldNotesThe pronunciation of the family name differs from that of the placeReferences No 17104 The London Gazette 30 January 1816 p 173 Montague Smith Patrick 1970 Debrett s Correct Form 1992 ed Debrett s Peerage p 401 ISBN 978 0 7472 0658 3 No 13131 The London Gazette 15 September 1789 p 597 No 13821 The London Gazette 13 October 1795 p 1052 Castlereagh The Parliamentary gazetteer of Ireland Vol I A C Dublin A Fullarton 1846 p 372 No 13922 The London Gazette 16 August 1796 p 781 No 16909 The London Gazette 18 June 1814 p 1255 No 17909 The London Gazette 29 March 1823 p 498 Fleming Neil C 2005 The Marquess of Londonderry aristocracy power and politics in Britain and Ireland I B Tauris pp 185 198 ISBN 978 1 85043 726 0 The Marquess of Londonderry Daily Telegraph 20 June 2012 Retrieved 6 October 2012 Burke s Peerage volume 2 2003 p 2383 Morris Susan Bosberry Scott Wendy Belfield Gervase eds 2019 Londonderry Marquess of Debrett s Peerage and Baronetage Vol 1 150th ed London Debrett s Ltd pp 2221 2224 ISBN 978 1 999767 0 5 1 Works cited Kidd Charles Williamson David editors Debrett s Peerage and Baronetage 1990 edition New York St Martin s Press 1990 page needed Leigh Rayment s Peerage Pages self published source better source needed External linksWikimedia Commons has media related to Marquesses of Londonderry European Heraldry page