Cracroft's Peerage
The Complete Guide to the British Peerage & Baronetage

If you have found this page useful, why not make a donation to The Peerage Research Trust so that we can continue to maintain and develop Cracroft's Peerage?

| Search this site | Introduction | Contents | The Monarchy | The Peerage | The Baronetage | Untitled Families | Orders of Chivalry | Miscellaneous | Forums | Contact Us | Links |



Portarlington, Earl of (I, 1785)


Creation: let. pat. 21 Jun 1785


Family name: Dawson later Dawson-Damer




Quarterly:  1st and 4th, Barry nebuly of six Argent and Gules over all a Bend engrailed Azure (Damer);  2nd and 3rd, Azure a Chevron Ermine between three Arrows paleways points downwards Argent on a Chief of the last three Martlets Sable a Canton Gules charged with a Mullet Gold (Dawson)


1st:  Out of a Mural Crown Or a Talbot's Head Azure eared Gold (Damer);  2nd:  A Cat's Head full faced erased near the shoulders of a tabby colour holding in the mouth a Rat Sable (Dawson)


On either side an Heraldic Tiger proper


Vitae Via Virtus (Virtue is the way of life)



John [Dawson], 2nd Viscount Carlow later 1st Earl of Portarlington, PC

1st son of William Henry [Dawson], 1st Viscount Carlow, by his wife Mary Damer, sister of Joseph [Damer], 1st Earl of Dorchester, and 1st dau. of Joseph Damer,. of Came House, co. Dorset


23 Aug 1744


1 Jan 1778 Lady Caroline Stuart (b. May 1750; d. 20 Jan 1813; bur. at Milton Abbey, co. Dorset), 5th dau. of John [Stuart], 3rd Earl of Bute, by his wife Mary Wortley-Montagu, suo jure Baroness Mount Stuart, only dau. of Edward Wortley-Montagu, of Wortley, co. York


1. Hon John Dawson, later 2nd Earl of Portarlington

2. Capt Hon Henry Dawson later Dawson-Damer RN, of Milton Abbey, co. Dorset (b. 19 Jul 1786; d. 27 May 1841), mar. 20 May 1813 Eliza Moriarty, dau. of Capt Edmund Joshua Moriarty RN by his wife Lady Lucy Luttrell, 3rd dau. of Simon [Luttrell], 1st Earl of Carhampton, and had issue:

1a. Henry John Reuben Dawson-Damer, later 3rd Earl of Portarlington

1a. Lady Jane Dawson-Damer, granted the style and precedence of the daughter of an Earl by Royal Warrant 1846 (d. 26 Aug 1853)

2a. Lady Caroline Mary Dawson-Damer, granted the style and precedence of the daughter of an Earl by Royal Warrant 1846 (d. 5 Dec 1851), mar. 16 Dec 1847 Admiral Sir George St Vincent Duckworth-King, 4th Bt. KCB RN, and had issue

3a. Lady Elizabeth Williamsa Anne Dawson-Damer, granted the style and precedence of the daughter of an Earl by Royal Warrant 1846 (dsp. 13 Feb 1897), mar. 20 Dec 1847 her second cousin Col Hardress Luttrell Saunderson (b. 1822; d. 21 Jun 1881), 1st son and heir of Col Hardress Robert Saunderson, of Northbrook House, co. Hampshire, by his wife Lady Maria Anne Luttrell-Olmius, only dau. by his second wife of John [Luttrell later Luttrell-Olmius], 3rd Earl of Carhampton

4a. Lady Louisa Georgiana Dawson-Damer, granted the style and precedence of the daughter of an Earl by Royal Warrant 1846 (dsp. 25 Apr 1904), mar. 3 Mar 1853 Capt John Chichester Knox (b. 5 Apr 1815; dsp. 22 Mar 1884), only son of Rt Hon George Knox MP by his second wife Harriet Fortescue, dau. of Thomas Fortescue

3. Col Rt Hon George Lionel Dawson later Dawson-Damer CB, of Came House, co. Dorset (b. 28 Oct 1788; d. 14 Apr 1856), mar. 1825 Mary Georgiana Emma Seymour, 2nd dau. of Adm Lord Hugh Seymour (by his wife Lady Anne Horatio Waldegrave, 3rd dau. by his second wife of James [Waldegrave], 2nd Earl Waldegrave), 5th son of Francis [Seymour], 1st Marquess of Hertford, and had issue:

1a. Lionel Seymour William Dawson-Damer, later 4th Earl of Portarlington

1a. Georgiana Augusta Charlotte Caroline Dawson-Damer (b. 13 Jun 1826; d. 8 Dec 1866), mar. 11 Mar 1847 Hugh [Fortescue], 3rd Earl Fortescue, and had issue

2a. Lady Cecilia Blanche Horatio Seymour Dawson-Damer, granted the style and precedence of the daughter of an Earl by Royal Warrant 1889 (dsp. 30 Jul 1922), mar. 26 Apr 1859 Lt Col Francis Haygarth (d. 18 Apr 1911)

3a. Alice Henrietta Dawson-Damer (dvp. young)

4a. Lady Evelyn Mary Stuart Dawson-Damer, granted the style and precedence of the daughter of an Earl by Royal Warrant 1889 (d. 27 Oct 1899), mar. 19 Apr 1855 Capt Francis Sutton (b. 2 Sep 1822; d. 26 Nov 1906), 3rd son of Sir Richard Sutton, 2nd Bt., of Norwood Park, co. Nottingham, by his wife Mary Elizabeth Burton, dau. of Benjamin Burton, of Burton Hall, co. Carlow, and had issue

5a. Lady Constance Wilhelmina Frances Dawson-Damer, granted the style and precedence of the daughter of an Earl by Royal Warrant 1889 (d. 25 Jun 1925), mar. 26 Aug 1856 Sir John Leslie, 1st Bt., of Glaslough, co. Monaghan, and had issue

4. Hon Lionel Charles Dawson (b. 7 May 1790; d. 25 Feb 1842), mar. 15 Sep 1820 Lady Elizabeth Emily Nugent (d. 6 Sep 1863), 2nd dau. of George Frederick [Nugent], 7th Earl of Westmeath, by his second wife Lady Elizabeth Emily Moore, 1st dau. of Charles [Moore], 1st Marquess of Drogheda, and had issue

5. Hon William Mackenzie Dawson (b. 1793; d. 16 Feb 1859), mar. (1) 1820 Patience Scott (d. 1821), dau. of Gen ..... Scott, (2) 1827 Louisa Frances Wright (d. 24 Jun 1847), dau. of S T Wright, and (3) 20 May 1856 Julia Hopkinson, yst. dau. of Capt ..... Hopkinson RN, and had issue by his second wife

1. Lady Caroline Elizabeth Dawson (b. 21 Mar 1782; d. 16 Feb 1861), mar. 4 Feb 1801 Henry Brooke [Parnell], 1st Baron Congleton, and had issue

2. Lady Louisa Mary Dawson (dsp. 18 Aug 1845), mar. 2 Feb 1829 as his second wife Rev Walter Davenport later Davenport Bromley, of Wooton Hall and Baginton (d. 5 Feb 1837), 3rd son of Davies Davenport MP, of Capesthorne Hall, co. Chester, by his wife Charlotte Sneyd, dau. of Ralph Sneyd, of Keele, co. Stafford

3. Lady Harriet Dawson (d. 16 Dec 1827), mar. 4 May 1813 Very Rev Hon Henry David Erskine, Dean of Ripon (b. 1786; d. 27 Jul 1859), 2nd son of Thomas [Erskine],1st Baron Erskine, by his first wife Frances Moore, dau. of Daniel Moore MP, and had issue

4. Lady Anna Maria Dawson (d. 12 Dec 1866)


25 Nov 1798 (bur. at Emo Park, Queen's County)


21 Jun 1785 Earl of Portarlington, of the Queen's County

suc. by



Member of Irish Parliament for Portarlington 1766-68 and for Queen's County 1768-71 and 1776-79; Governor of Queen's County 1779-98; suc. his father 22 Aug 1779 as 2nd Viscount Carlow; Privy Councillor [I] 1795


John [Dawson], 2nd Earl of Portarlington


26 Feb 1781


28 Dec 1845 (bur. in Kensal Green Cemetery)

suc. by



Lieut, 20th (East Devonshire) Foot 1798; served in Holland 1799; Capt, 23rd Light Dragoons 1800 and 16th (Queen's) Light Dragoons 1804; served in Hanover 1805; Major, 4th Garrison Battalion 1806 and 3rd (East Kent) Foot 1807; Lt Col, 10th (North Lincolnshire) Foot 1808 and 23rd Light Dragoons 1809-15; at the Battle of Talavera 1809; Col in the Army 1814; at the Battles of Quatre Bras and Waterloo 1815


Henry John Reuben [Dawson-Damer], 3rd Earl of Portarlington, KP


5 Sep 1822


2 Sep 1847 Lady Alexandrina Octavia Maria Vane (b. 29 Jul 1823; d. 15 Jan 1874; bur. at Emo Park, Queen's County), 2nd dau. of Charles William [Stewart later Vane], 3rd Marquess of Londonderry, by his second wife Frances Anne Emily Vane-Tempest, only dau. and hrss. of Sir Henry Vane-Tempest, 2nd Bt., of Wynyard and Long Newton, co. Durham


s.p. 1 Mar 1889 (bur. at Coolbanagher, Queen's County)

suc. by



a Representative Peer for Ireland (Conservative) 1855-89; Knight of St Patrick 1879


Lionel Seymour William [Dawson-Damer], 4th Earl of Portarlington


7 Apr 1832


19 Apr 1855 Hon Harriet Lydia Robinson (b. 23 Jul 1829; d. 23 Nov 1894; bur. at Came, co. Dorset), 2nd dau. of Henry Montagu [Robinson], 6th Baron Rokeby, by his wife Magdalen Hurley, dau. of Lieut Col Thomas Hurley


1. Hon Lionel George Henry Seymour Dawson-Damer, later 5th Earl of Portarlington

2. Hon Montagu Francis Beauchamp Seymour Dawson-Damer (b. 1 Oct 1864; d. 24 Mar 1898), mar. 5 Feb 1896 Margaret Stirling MacLeod (d. 18 Jun 1951), dau. of Thomas MacLeod, of Brisbane, Australia, and had issue

1. Lady Mary Frances Seymour Dawson-Damer (b. 26 Jul 1860; d. 24 Feb 1895), mar. 21 Jul 1880 Hon Algernon Henry Mills (b. 13 Feb 1856; d. 21 Oct 1922), 2nd son of Charles Henry [Mills], 1st Baron Hillingdon, by his wife Lady Louisa Isabella Lascelles, 1st dau. of Henry [Lascelles], 3rd Earl of Harewood, and had issue


17 Dec 1892 (bur. at Came. co. Dorset)

suc. by



joined Scots Fusilier Guards 1849; served in the Crimea, being present at the Battles of Alma and Inkerman 1854; Member of Parliament (Conservative) for Portarlington 1857-65 and 1868-80;


Lionel George Henry Seymour [Dawson-Damer], 5th Earl of Portarlington


19 Aug 1858


25 Oct 1881 Emma Andalusia Frere Kennedy (mar. (2) 25 Sep 1901 Henry Berkeley [Portman], 3rd Viscount Portman;  d. 13 May 1929; bur. at Durweston, co. Dorset), only dau. of Lord Nigel Kennedy (by his first wife Catherine Anne May, yst. dau. of Maj James Frere May), yr. brother of Archibald [Kennedy], 2nd Marquess of Ailsa and 8th son of Lord Archibald Kennedy, styled Earl of Cassillis (by his wife Eleanor Allardyce, only dau. and hrss. of Alexander Allardyce, of Dunnottar, co. Kincardine), 1st son and heir ap. of Archibald [Kennedy], 1st Marquess of Ailsa


1. Hon Lionel Arthur Henry Seymour Dawson-Damer, later 6th Earl of Portarlington

2. Lieut Hon George Seymour Dawson-Damer (b. 30 Jul 1892; d. of wounds received in action 12 Apr 1917)

1. Lady Aline Mary Seymour Dawson-Damer MBE (b. 18 Oct 1884; d. 12 Sep 1953), mar. 15 Oct 1904 Lt Col Valentine Vivian CMG DSO MVO (d. 1 Feb 1948), 1st son of William Vivian, of 185 Queen's Gate, London, and had issue

2. Lady Christian Norah Dawson-Damer (b. 7 Aug 1890; d. 29 Mar 1959), mar. (1) 17 Sep 1914 Capt Hon Fergus Bowes-Lyon (b. 18 Apr 1889; d. in action 27 Sep 1915), brother of Lady Elizabeth Angela Marguerite Bowes-Lyon later HM Queen Elizabeth The Queen Mother, and 4th son of Claude George [Bowes-Lyon], 14th Earl of Strathmore and Kinghorne, by his wife Nina Cecilia Cavendish-Bentinck, 1st surv. dau. and cohrss. by his second wife of Rev Charles William Frederick Cavendish-Bentinck, and (2) 4 Jun 1919 Capt William Frederick Martin, Indian Police (d. 6 Oct 1947), 3rd son of Charles William Wall Martin, of Killieshandra, co. Cavan, and had issue by both husbands

3. Lady Moyra Marjorie Dawson Damer (b. 23 Mar 1897; d. in a car crash 17 Apr 1962), mar. 3 Jun 1924 Capt James Brinsley Peter FitzGerald (b. 25 Jan 1894; d. with his wife 17 Apr 1962), 1st son and heir of Peter David FitzGerald (by his first wife Helen Mary Martin, widow of Capt Leslie Martin and dau. of Maj William Francis Percy), 3rd son of Sir Peter George FitzGerald, 1st Bt., of Valencia, co. Kerry, Knight of Kerry, and had issue


31 Aug 1900 (bur. at Coolbanagher, Queen's County)

suc. by



Lieut, 2nd Battalion, Scots Guards 1878-86; a Representative Peer for Ireland (Conservative) 1896-1900


Lionel Arthur Henry Seymour [Dawson-Damer], 6th Earl of Portarlington


26 Aug 1883


2 Feb 1907 Winnifreda Yuill (d. 1975), only dau. of George Skelton Yuill, of Chesham Place, SW London

only child

1. A/Cdre Hon George Lionel Seymour Dawson-Damer AAF, styled Viscount Carlow (b. 20 Dec 1907; dvp. on active service 17 Apr 1944), mar. 7 Jan 1937 Peggy Cambie (mar. (2) 14 Nov 1945 (div. 1956) Peter George Hodges Nugent, of Willards Farm, Dunsfold, co. Surrey;  d. 1 Nov 1963), 2nd dau. of Charles Cambie, of Toronto, Canada, and had issue:

1a. George Lionel Yuill Seymour Dawson-Damer, later 7th Earl of Portarlington

2a. Hon (Lionel) John Charles Seymour Dawson-Damer (b. 12 Oct 1940; dsp. in a motor-racing accident 24 Jun 2000), mar. (1) 10 Dec 1965 (div. 1975) Rosemary Ashley Morrett Hancock (mar. (2) 1977 (div. 1983) as his third wife Spencer Douglas David [Compton], 7th Marquess of Northampton), only dau. of P G M Hancock, of Nottingham, and (2) 19 Apr 1982 Ashley Judith Mann, dau. of W/Cdr W Mann, of Surfers' Paradise, Queensland, Australia


s.p.m.s. 4 Jul 1959

suc. by



2nd Lieut, Irish Guards 1903-05; served in World War I 1914-18


George Lionel Yuill Seymour [Dawson-Damer], 7th Earl of Portarlington


10 Aug 1938


26 Jul 1961 Davina Windley, 1st dau. of Sir Edward Henry Windley KCMG KCVO, of Quenington, co. Gloucester, by his wife Patience Anne Sergison-Brooke, only child by his first wife of Gen Sir Bertram Norman Brooke later Sergison-Brooke KCB KCVO CMG DSO


1. Hon Charles George Yuill Seymour Dawson-Damer, styled Viscount Carlow, Page of Honour to Queen Elizabeth II 1979-81 (b. 6 Oct 1965), mar. 16 Mar 2002 Clare L Garside, yst. dau. of Rodney Garside, of Holywell Green, co. York, and has issue:

1a. Hon Emma Louise Seymour Dawson-Damer (b. 13 Nov 2007)

2. Capt Hon Edward Lionel Seymour Dawson-Damer MVO, of Gledswood, Melrose, co. Roxburgh, Equerry to HM Queen Elizabeth the Queen Mother 1992-94 (b. 10 Nov 1967), mar. 3 Apr 2004 Joanne Margaret Grant, 2nd dau. of Prof Michael Grant, of Connolly, Western Australia, Australia, and has issue

3. Hon Henry Lionel Seymour Dawson-Damer, of Wolseley Road, Point Piper, New South Wales, Australia (b. 5 Aug 1971), mar. 25 Jul 2003 Alexandra Louise Noad, only dau. of Timothy Noad, of Nairobi, Kenya, and has issue

1. Lady Marina Davina Dawson-Damer (b. 8 Aug 1969)


 Last updated 11 Jan 2008




7th Earl of Portarlington

(Ireland, let. pat. 21 Jun 1785)

8th Viscount Carlow, of Carlow

(Ireland, let. pat 24 Jul 1776)

8th Baron Dawson, of Dawson's Court in the Queen's County

(Ireland, let. pat. 29 May 1770)



118 Wolseley Road, Point Piper, New South Wales 2027, Australia

Tel:  2 93639725

Gledswood, Melrose, Roxburghshire TD6 9DN



ã Copyright: Heraldic Media Limited. All rights reserved.