| Date inherited | Date of deathor other loss of title | Title | Name | Other titlesby marriage | Preceded in title by | Succeeded in title by |
|---|
| 1903 | 29 April 1929 | 16th Baroness Darcy de Knayth | Violet Herbert | Countess of Powis | Sackville Lane-Fox, fatherabeyant 1490-1903 | Mervyn Herbert, son |
| 28 August 1906 | 18 June 1917 | 14th Baroness Wentworth | Ada King-Milbanke | | Ralph King-Milbanke, father | Anne Blunt, aunt |
| 29 April 1907 | 4 May 1939 | 25. Baroness de Ros | Mary (FitzGerald-de Ros) Dawson | Gräfin von Dartrey | Dudley FitzGerald-de Ros , Vater | Una Ross , Tochter abeyant 1939–1943 |
| 1908 | 28. August 1945 | 12. Lady Herries of Terregles | Gwendolen Fitzalan-Howard | Herzogin von Norfolk | Marmaduke Constable-Maxwell, Vater | Bernard Fitzalan-Howard , Sohn |
| 16. Januar 1909 | 21. Dezember 1919 | 2. Baroness Amherst of Hackney | Mary Cecil | Lady William Cecil | William Tyssen-Amherst , Vater | William Alexander Evering Cecil , Sohn |
| 1. Februar 1909 | 28. Mai 1962 | Die 2. Baroness Burton | Nellie Lisa Bass | | Michael Bass, 1. Baron Burton , Vater | Michael Baillie, 3. Baron Burton , Enkel |
| 12. Januar 1912 | 26. Februar 1959 | 2. Herzogin von Fife | Prinzessin Alexandra | Prinzessin Arthur von Connacht | Alexander Duff , Vater | James Carnegie , Neffe |
| 25. März 1913 | 24. Dezember 1936 | 2. Viscountess Wolseley | Frances Garnet Wolseley | | Garnet Joseph Wolseley , Vater | Ausgestorben |
| 21. Januar 1914 | 18. August 1926 | 2. Baroness Strathcona und Mount Royal | Margaret Howard | | Donald Alexander Smith , Vater | Donald Sterling Palmer Howard , Sohn |
| 14. November 1914 | 9. Oktober 1944 | 2. Gräfin Roberts | Aileen Roberts | | Frederick Roberts , Vater | Ada Lewin, Schwester |
| 12. November 1915 | 30. September 1969 | 12. Gräfin von Seafield | Nina Studley-Herbert | | James Ogilvie-Grant , Vater | Ian Ogilvie-Grant, Sohn |
| 18. Juni 1917 | 15. Dezember 1917 | 15. Baroness Wentworth | Anne Blunt | | Ada King-Milbanke , Nichte | Judith Blunt-Lytton , Tochter |
| 15. Dezember 1917 | 8. August 1957 | 16. Baroness Wentworth | Judith Blunt-Lytton | | Anne Blunt , Mutter | Noel Lytton , Sohn |
| 3. Juli 1918 | 20. Juli 1958 | 2. Viscountess Rhondda | Margaret Mackworth | | David Alfred Thomas , Vater | Ausgestorben |
| 17. Mai 1920 | 24. Februar 1960 | 12. Gräfin von Loudoun | Edith Abney-Hastings | | Charles Clifton , Onkel | Barbara Abney-Hastings , Tochter |
| 7. März 1921 | 23. Baroness Botreaux, 20. Baroness Hastings | Charles Rawdon-Hastings, Onkel abeyant 1920-1921 | Abeyant |
| 7. Baroness Stanley | Ferdinando Stanley potenziell 1594-1921 |
| 23. Februar 1921 | 12. Dezember 1974 | 14. Baroness Strange | Elizabeth Philipps | Viscountess St Davids | Jestyn Philipps , Sohn |
| 22. Baroness Hungerford, 21. Baroness de Moleyns | Charles Clifton, uncleabeyant 1920-1921 |
| 20 March 1925 | 9 February 1966 | 2nd Baroness Ravensdale | Irene Curzon, 2nd Baroness Ravensdale | Baroness Ravensdale of Kedlestoncreated for life | George Curzon, father | Nicholas Mosley, nephew |
| 1935 | 2 June 1975 | 10th Countess of Dysart | Wenefryde Scott | | William Tollemache, uncle | Rosamund Greaves, daughter |
| 24 January 1941 | 16 May 1978 | 23rd Countess of Erroll | Diana Hay (Moncreiffe) | | Josslyn Hay, father | Merlin Hay, son |
| March 1943 | 24 February 2008 | 18th Baroness Darcy de Knayth | Davina Ingrams | | Mervyn Herbert, father | Caspar Ingrams, son |
| 1943 | 9 October 1956 | 26th Baroness de Ros | Una Dawson Ross | | Mary Dawson, mother | Georgiana Maxwell, granddaughterabeyant 1956–1958 |
| 17 October 1944 | 30 September 2012 | 12th Lady Kinloss | Mary Freeman-Grenville | | Mary Morgan-Grenville, grandmother | Teresa Freeman-Grenville, daughter |
| 9 October 1944 | 1955 | 3rd Countess Roberts | Ada Lewin | | Aileen Roberts, sister | Extinct |
| 16 April 1956 | 17 April 1982 | 11th Lady Ruthven of Freeland | Bridget (Hore-Ruthven) (Howard) Monckton | Countess of Carlisleby first marriageViscountess Monckton of Brenchleyby second marriage | Walter Hore-Ruthven, father | Charles Howard, son |
| 1958 | 21 April 1983 | 27th Baroness de Ros | Georgiana Maxwell | | Una Ross, grandmotherabeyant 1956-1958 | Peter Maxwell, son |
| 24 February 1960 | 1 November 2002 | 13th Countess of Loudoun | Barbara (Huddleston) Abney-Hastings | | Edith Abney-Hastings, mother | Michael Abney-Hastings, son |
| 1 February 1963 | 9 December 2019 | 24th Countess of Sutherland | Elizabeth Sutherland | | George Sutherland-Leveson-Gower, uncle | Alistair Charles St. Clair Sutherland, eldest son |
| 30 December 1965 | 6 July 1995 | 20th Lady Sempill | Ann Forbes-Sempill | | William Forbes-Sempill, father | James Chant-Sempill, son |
| 26 May 1966 | 21 September 1974 | 11th Countess of Kintore | Ethel Sydney Keith-Falconer | Viscountess Stonehaven | Arthur George Keith-Falconer, brother | James Ian Baird, son |
| 22 July 1969 | 4 May 1974 | 10th Baroness Wharton | Elisabeth Kemeys-Tynte | | John Kemeys-Tynte, brother | Myrtle Robertson, daughterabeyant 1974–1990 |
| 1970 | 25 December 2012 | 27th Baroness Dacre | Rachel Douglas-Home | | Thomas Brand , Vater abwesend 1965-1970 | James Douglas-Home, Sohn |
| 22. April 1971 | 1990 | 2. Baroness Portal von Hungerford | Rosmarinportal | | Charles Portal , Vater | Ausgestorben |
| 19. April 1972 | 27. Mai 2002 | 14. Baroness Dudley | Barbara Hamilton | | Ferdinando Dudley Henry Lea Smith , Bruder | Jim Anthony Hill Wallace, Sohn |
| 31. Januar 1975 | 25. November 2014 | 14. Lady Herries of Terregles | Anne Cowdrey | Baronin Cowdrey von Tonbridge | Bernard Fitzalan-Howard , Vater | Mary Mumford , Schwester |
| 21. April 1975 | | 31. Gräfin von März | Margaret (Lane) von Mar | | Jakob von Mar , Vater | |
| 1982 | 11. März 2005 | 16. Baroness Strange | Cherry Drummond von Megginch | | John Drummond , Vater | Adam Drummond , Sohn |
| 29. März 1983 | | 28. Baroness Willoughby de Eresby | Nancy Jane Marie Heathcote-Drummond-Willoughby | | James Heathcote-Drummond-Willoughby , Vater | |
| 1975 | 2003 | 11. Gräfin von Dysart | Rosamund Greaves | | Wenefryde Scott, Mutter | Katherine Grant , Schwester |
| 27. August 1979 | 13. Juni 2017 | 2. Gräfin Mountbatten von Burma | Patricia Knatchbull | Baroness Brabourne | Louis Mountbatten , Vater | Norton Knatchbull , Sohn |
| 31. August 1979 | 3. September 2024 | 21. Lady Saltoun | Flora Fraser | | Alexander Fraser , Vater | Katharine Fraser , Tochter |
| 19. Dezember 1985 | | 8. Baroness Braye | Mary Penelope Verney-Höhle | | | |
| 1990 | 15. Mai 2000 | 11. Baroness Wharton | Myrtle Robertson | | Elisabeth Kemeys-Tynte , Mutter abeyant 1974–1990 | Myles Robertson, Sohn |
| 30. Juni 1995 | 23. Januar 2023 | 16. Baronin Berners | Pamela Vivien Kirkham | | Vera Ruby Williams, Mutter in Abwesenheit 1992-1995 | Rupert Kirkham, Sohn |
| Mai 1999 | | 11. Baroness Arlington | Jennifer Nelson Forwood | | John FitzRoy , Onkel abeyant 1936-1999 | |