William John Arthur Charles James Cavendish-Bentinck, 6th Duke of Portland1 
M, #9611, b. 28 December 1857, d. 26 April 1943
William John Arthur Charles James Cavendish-Bentinck, 6th Duke of Portland|b. 28 Dec 1857\nd. 26 Apr 1943|p962.htm#i9611|Lt.-Gen. Arthur Cavendish-Bentinck|b. 10 May 1819\nd. 11 Dec 1877|p961.htm#i9608|Elizabeth Sophia Hawkins-Whitshed|d. 4 Jan 1858|p961.htm#i9609|Lt.-Col. Lord William C. A. Cavendish-Bentinck|b. 3 Oct 1780\nd. 28 Apr 1826|p224.htm#i2240|Lady Anne Wellesley|b. c 1795\nd. 19 Mar 1875|p10101.htm#i101008|Sir St. V. K. Hawkins-Whitshed, Bt.|d. 13 Sep 1870|p2346.htm#i23460||||
Last Edited=29 Dec 2004
William John Arthur Charles James Cavendish-Bentinck, 6th Duke of Portland was born on 28 December 1857. He was the son of Lt.-Gen. Arthur Cavendish-Bentinck and Elizabeth Sophia Hawkins-Whitshed. He married Winifred Anna Dallas-Yorke, daughter of Thomas Yorke Dallas-Yorke, on 11 June 1889. He died on 26 April 1943 at age 85.
William John Arthur Charles James Cavendish-Bentinck, 6th Duke of Portland gained the title of 6th Duke of Portland. He succeeded to the title of 2nd Baron Bolsover, of Bolsover Castle, co. Derby [U.K., 1880] on 7 August 1893.1
William John Arthur Charles James Cavendish-Bentinck, 6th Duke of Portland gained the title of 6th Duke of Portland. He succeeded to the title of 2nd Baron Bolsover, of Bolsover Castle, co. Derby [U.K., 1880] on 7 August 1893.1
Children of William John Arthur Charles James Cavendish-Bentinck, 6th Duke of Portland and Winifred Anna Dallas-Yorke
- Lady Victoria Alexandrina Violet Cavendish-Bentinck+ b. 27 Feb 1890, d. 8 May 1994
- Sir William Arthur Henry Cavendish-Bentinck, 7th Duke of Portland+ b. 16 Mar 1893
- Francis Morven Dallas Cavendish-Bentinck b. 27 Jul 1900, d. 22 Aug 1950
Citations
- [S6] G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume II, page 210. Hereinafter cited as The Complete Peerage.
Winifred Anna Dallas-Yorke 
F, #9612, d. 30 July 1954
Winifred Anna Dallas-Yorke|d. 30 Jul 1954|p962.htm#i9612|Thomas Yorke Dallas-Yorke||p1825.htm#i18243||||||||||||||||
Last Edited=18 Sep 2002
Winifred Anna Dallas-Yorke was the daughter of Thomas Yorke Dallas-Yorke. She married William John Arthur Charles James Cavendish-Bentinck, 6th Duke of Portland, son of Lt.-Gen. Arthur Cavendish-Bentinck and Elizabeth Sophia Hawkins-Whitshed, on 11 June 1889. She died on 30 July 1954.
Her married name became Cavendish-Bentinck.
Her married name became Cavendish-Bentinck.
Children of Winifred Anna Dallas-Yorke and William John Arthur Charles James Cavendish-Bentinck, 6th Duke of Portland
- Lady Victoria Alexandrina Violet Cavendish-Bentinck+ b. 27 Feb 1890, d. 8 May 1994
- Sir William Arthur Henry Cavendish-Bentinck, 7th Duke of Portland+ b. 16 Mar 1893
- Francis Morven Dallas Cavendish-Bentinck b. 27 Jul 1900, d. 22 Aug 1950
Sir William Arthur Henry Cavendish-Bentinck, 7th Duke of Portland
M, #9613, b. 16 March 1893
Sir William Arthur Henry Cavendish-Bentinck, 7th Duke of Portland|b. 16 Mar 1893|p962.htm#i9613|William John Arthur Charles James Cavendish-Bentinck, 6th Duke of Portland|b. 28 Dec 1857\nd. 26 Apr 1943|p962.htm#i9611|Winifred Anna Dallas-Yorke|d. 30 Jul 1954|p962.htm#i9612|Lt.-Gen. Arthur Cavendish-Bentinck|b. 10 May 1819\nd. 11 Dec 1877|p961.htm#i9608|Elizabeth S. Hawkins-Whitshed|d. 4 Jan 1858|p961.htm#i9609|Thomas Y. Dallas-Yorke||p1825.htm#i18243||||
Last Edited=28 Mar 2008

William Cavendish-Bentinck, 7th Duke of Portland 1
Sir William Arthur Henry Cavendish-Bentinck, 7th Duke of Portland gained the title of 7th Duke of Portland. He succeeded to the title of 3rd Baron Bolsover, of Bolsover Castle, co. Derby [U.K., 1880] on 26 April 1943.
Children of Sir William Arthur Henry Cavendish-Bentinck, 7th Duke of Portland and Hon. Ivy Gordon-Lennox
- Alexandra Margaret Anne Cavendish-Bentinck b. 6 Sep 1916
- Victoria Margaret Cavendish-Bentinck b. 9 Oct 1918, d. 29 Aug 1955
Citations
- [S300] Michael Rhodes, "re: Ernest Fawbert Collection," e-mail message from <e-mail address> (Harrogate, North Yorkshire) to Darryl Roger Lundy, 8 February. Hereinafter cited as "re: Ernest Fawbert Collection".
- [S37] Charles Mosley, editor, Burke's Peerage, Baronetage & Knightage, 107th edition, 3 volumes (Wilmington, Delaware, U.S.A.: Burke's Peerage (Genealogical Books) Ltd, 2003), volume 3, page 3336. Hereinafter cited as Burke's Peerage and Baronetage, 107th edition.
Hon. Ivy Gordon-Lennox1 
F, #9614, b. 16 June 1887, d. 3 March 1982
Hon. Ivy Gordon-Lennox|b. 16 Jun 1887\nd. 3 Mar 1982|p962.htm#i9614|Colonel Lord Algernon Charles Gordon-Lennox|b. 19 Sep 1847\nd. 3 Oct 1921|p1367.htm#i13663|Blanche Maynard|b. 14 Feb 1864\nd. 17 Aug 1945|p771.htm#i7703|Charles H. Gordon-Lennox, 6th Duke of Richnond|b. 27 Feb 1818\nd. 27 Sep 1903|p1068.htm#i10679|Frances H. Greville|b. 8 Mar 1824\nd. 8 Mar 1887|p1068.htm#i10680|Colonel Hon. Charles H. Maynard|b. 1814\nd. 2 Jan 1865|p1241.htm#i12407|Blanche A. Fitzroy|b. 1839\nd. 8 Dec 1933|p1126.htm#i11251|
Last Edited=27 Mar 2008

Ivy, Duchess of Portland 2
Hon. Ivy Gordon-Lennox held the office of Maid-of-Honour to HM Queen Aleen Alexandra between 1912 and 1915.1 Her married name became Cavendish-Bentinck. She was invested as a Dame Commander, Order of the British Empire (D.B.E.) in 1958.1
Children of Hon. Ivy Gordon-Lennox and Sir William Arthur Henry Cavendish-Bentinck, 7th Duke of Portland
- Alexandra Margaret Anne Cavendish-Bentinck b. 6 Sep 1916
- Victoria Margaret Cavendish-Bentinck b. 9 Oct 1918, d. 29 Aug 1955
Citations
- [S37] Charles Mosley, editor, Burke's Peerage, Baronetage & Knightage, 107th edition, 3 volumes (Wilmington, Delaware, U.S.A.: Burke's Peerage (Genealogical Books) Ltd, 2003), volume 3, page 3336. Hereinafter cited as Burke's Peerage and Baronetage, 107th edition.
- [S300] Michael Rhodes, "re: Ernest Fawbert Collection," e-mail message from <e-mail address> (Harrogate, North Yorkshire) to Darryl Roger Lundy, 8 February. Hereinafter cited as "re: Ernest Fawbert Collection".
- [S1122] Michael Rhodes, "re: updates," e-mail message from <e-mail address> (Harrogate, North Yorkshire) to www.thepeerage.com, 8 July 2004. Hereinafter cited as "re: updates".
Alexandra Margaret Anne Cavendish-Bentinck
F, #9615, b. 6 September 1916
Alexandra Margaret Anne Cavendish-Bentinck|b. 6 Sep 1916|p962.htm#i9615|Sir William Arthur Henry Cavendish-Bentinck, 7th Duke of Portland|b. 16 Mar 1893|p962.htm#i9613|Hon. Ivy Gordon-Lennox|b. 16 Jun 1887\nd. 3 Mar 1982|p962.htm#i9614|William J. A. C. J. Cavendish-Bentinck, 6th Duke of Portland|b. 28 Dec 1857\nd. 26 Apr 1943|p962.htm#i9611|Winifred A. Dallas-Yorke|d. 30 Jul 1954|p962.htm#i9612|Colonel Lord Algernon C. Gordon-Lennox|b. 19 Sep 1847\nd. 3 Oct 1921|p1367.htm#i13663|Blanche Maynard|b. 14 Feb 1864\nd. 17 Aug 1945|p771.htm#i7703|
Last Edited=10 May 2003
Alexandra Margaret Anne Cavendish-Bentinck was born on 6 September 1916. She is the daughter of Sir William Arthur Henry Cavendish-Bentinck, 7th Duke of Portland and Hon. Ivy Gordon-Lennox.
Lady Victoria Alexandrina Violet Cavendish-Bentinck 
F, #9616, b. 27 February 1890, d. 8 May 1994
Lady Victoria Alexandrina Violet Cavendish-Bentinck|b. 27 Feb 1890\nd. 8 May 1994|p962.htm#i9616|William John Arthur Charles James Cavendish-Bentinck, 6th Duke of Portland|b. 28 Dec 1857\nd. 26 Apr 1943|p962.htm#i9611|Winifred Anna Dallas-Yorke|d. 30 Jul 1954|p962.htm#i9612|Lt.-Gen. Arthur Cavendish-Bentinck|b. 10 May 1819\nd. 11 Dec 1877|p961.htm#i9608|Elizabeth S. Hawkins-Whitshed|d. 4 Jan 1858|p961.htm#i9609|Thomas Y. Dallas-Yorke||p1825.htm#i18243||||
Last Edited=10 May 2003
Lady Victoria Alexandrina Violet Cavendish-Bentinck was born on 27 February 1890. She was the daughter of William John Arthur Charles James Cavendish-Bentinck, 6th Duke of Portland and Winifred Anna Dallas-Yorke. She married Captain Michael John Erskine-Wemyss, son of Randolph Gordon Erskine-Wemyss of Wemyss and Lady Lillian Mary Paulett, on 25 November 1918. She died on 8 May 1994 at age 104 at Wemyss Castle, Fife, Scotland.
Her married name became Erskine-Wemyss.
Her married name became Erskine-Wemyss.
Children of Lady Victoria Alexandrina Violet Cavendish-Bentinck and Captain Michael John Erskine-Wemyss
- Captain David Wemyss+ b. 11 Feb 1920
- Andrew Michael John Wemyss+ b. 3 Oct 1925
Captain Michael John Erskine-Wemyss 
M, #9617, b. 8 March 1888, d. circa 1982
Captain Michael John Erskine-Wemyss|b. 8 Mar 1888\nd. c 1982|p962.htm#i9617|Randolph Gordon Erskine-Wemyss of Wemyss|b. 11 Jul 1858\nd. 17 Jul 1908|p1087.htm#i10867|Lady Lillian Mary Paulett|b. 26 Jul 1859\nd. 11 Nov 1952|p1088.htm#i10874|James H. Erskine-Wemyss|b. 29 Aug 1829\nd. 29 Mar 1864|p1087.htm#i10868|Millicent A. M. Erskine|d. 11 Feb 1895|p1088.htm#i10873|John Paulett, 14th Marquess of Winchester|b. 3 Jun 1801\nd. 4 Jul 1887|p1257.htm#i12564|Hon. Mary Montagu|b. b 1840\nd. 6 Sep 1868|p2533.htm#i25325|
Last Edited=24 Mar 2008
Consanguinity Index=0.0%
Captain Michael John Erskine-Wemyss was born on 8 March 1888. He was the son of Randolph Gordon Erskine-Wemyss of Wemyss and Lady Lillian Mary Paulett. He married Lady Victoria Alexandrina Violet Cavendish-Bentinck, daughter of William John Arthur Charles James Cavendish-Bentinck, 6th Duke of Portland and Winifred Anna Dallas-Yorke, on 25 November 1918. He died circa 1982.
Captain Michael John Erskine-Wemyss lived at Wemyss Castle, Fife, Scotland.
Captain Michael John Erskine-Wemyss lived at Wemyss Castle, Fife, Scotland.
Children of Captain Michael John Erskine-Wemyss and Lady Victoria Alexandrina Violet Cavendish-Bentinck
- Captain David Wemyss+ b. 11 Feb 19201
- Andrew Michael John Wemyss+ b. 3 Oct 1925
Citations
- [S37] Charles Mosley, editor, Burke's Peerage, Baronetage & Knightage, 107th edition, 3 volumes (Wilmington, Delaware, U.S.A.: Burke's Peerage (Genealogical Books) Ltd, 2003). Hereinafter cited as Burke's Peerage and Baronetage, 107th edition.
William George Frederick Cavendish-Bentinck 
M, #9618, b. 26 August 1856, d. 13 November 1948
William George Frederick Cavendish-Bentinck|b. 26 Aug 1856\nd. 13 Nov 1948|p962.htm#i9618|George Augustus Frederick Cavendish-Bentinck|b. 9 Jul 1821\nd. 9 Apr 1891|p964.htm#i9638|Prudentia Penelope Leslie|d. 22 Jun 1896|p964.htm#i9639|Maj.-Gen. Lord Frederick Cavendish-Bentinck|b. 2 Nov 1781\nd. 11 Feb 1828|p961.htm#i9604|Mary Lowther|b. b 1805\nd. 21 Oct 1863|p965.htm#i9641|Colonel Charles P. Leslie|d. 15 Nov 1831|p1822.htm#i18220|Christiana Fosbery|d. 24 Apr 1869|p25362.htm#i253617|
Last Edited=10 May 2003
Consanguinity Index=0.0%
William George Frederick Cavendish-Bentinck was born on 26 August 1856. He was the son of George Augustus Frederick Cavendish-Bentinck and Prudentia Penelope Leslie. He married Ruth Mary St. Maur, daughter of Edward Adolphus Ferdinand St. Maur, Earl St. Maur and Rosina Elizabeth Swan, on 8 August 1887. He died on 13 November 1948 at age 92.
Children of William George Frederick Cavendish-Bentinck and Ruth Mary St. Maur
- Venetia Barbara Cavendish-Bentinck
- Ferdinand William Cavendish-Bentinck, 8th Duke of Portland b. 4 Jul 1888, d. 1980
- George Augustus Frederick Cavendish-Bentinck b. 30 May 1891, d. 7 Jun 1892
- Victor Frederick William Cavendish-Bentinck, 9th Duke of Portland+ b. 18 Jun 1897, d. c 1990
- Lucy Joan Cavendish-Bentinck+ b. b 1907, d. 1971
Ferdinand William Cavendish-Bentinck, 8th Duke of Portland 
M, #9619, b. 4 July 1888, d. 1980
Ferdinand William Cavendish-Bentinck, 8th Duke of Portland|b. 4 Jul 1888\nd. 1980|p962.htm#i9619|William George Frederick Cavendish-Bentinck|b. 26 Aug 1856\nd. 13 Nov 1948|p962.htm#i9618|Ruth Mary St. Maur|b. 27 Oct 1867\nd. 28 Jan 1953|p964.htm#i9637|George A. F. Cavendish-Bentinck|b. 9 Jul 1821\nd. 9 Apr 1891|p964.htm#i9638|Prudentia P. Leslie|d. 22 Jun 1896|p964.htm#i9639|Edward A. F. St. Maur, Earl St. Maur|b. 17 Jul 1835\nd. 30 Sep 1869|p1823.htm#i18226|Rosina E. Swan||p23177.htm#i231769|
Last Edited=12 Apr 2008
Consanguinity Index=0.0%

Ferdinand Cavendish-Bentinck, 8th Duke of Portland 1
Ferdinand William Cavendish-Bentinck, 8th Duke of Portland gained the title of 8th Duke of Portland.
Citations
- [S300] Michael Rhodes, "re: Ernest Fawbert Collection," e-mail message from <e-mail address> (Harrogate, North Yorkshire) to Darryl Roger Lundy, 8 February. Hereinafter cited as "re: Ernest Fawbert Collection".
- [S8] Charles Mosley, editor, Burke's Peerage and Baronetage, 106th edition, 2 volumes (Crans, Switzerland: Burke's Peerage (Genealogical Books) Ltd, 1999), volume 1, page 82. Hereinafter cited as Burke's Peerage and Baronetage, 106th edition.
Wentworth Frances Hope Johnstone1 
F, #9620, b. 18 February 1882
Wentworth Frances Hope Johnstone|b. 18 Feb 1882|p962.htm#i9620|William James Hope Johnstone|b. 25 Jul 1855\nd. 9 Aug 1919|p1823.htm#i18227|Emily Mary Baillie|d. 19 Feb 1933|p2954.htm#i29540|Captain George G. Hope Johnstone|b. 18 Oct 1820\nd. 14 Jul 1866|p4707.htm#i47070|Adelaide M. W. Sinclair|b. b 1830\nd. 7 Sep 1873|p4708.htm#i47071|Captain Edward Baillie||p1117.htm#i11162||||
Last Edited=25 Aug 2003
Wentworth Frances Hope Johnstone was born on 18 February 1882.1 She was the daughter of William James Hope Johnstone and Emily Mary Baillie.1 She married Ferdinand William Cavendish-Bentinck, 8th Duke of Portland, son of William George Frederick Cavendish-Bentinck and Ruth Mary St. Maur, on 9 May 1912.1 She and Ferdinand William Cavendish-Bentinck, 8th Duke of Portland were divorced in 1950.
Her married name became Cavendish-Bentinck.
Her married name became Cavendish-Bentinck.
Citations
- [S8] Charles Mosley, editor, Burke's Peerage and Baronetage, 106th edition, 2 volumes (Crans, Switzerland: Burke's Peerage (Genealogical Books) Ltd, 1999), volume 1, page 82. Hereinafter cited as Burke's Peerage and Baronetage, 106th edition.





