Lady Beatrix Frances Petty-FitzMaurice1 
After her marriage, Lady Beatrix Frances Petty-FitzMaurice was styled as Marchioness of Waterford on 16 October 1897. From 16 October 1897, her married name became Beresford. From 19 August 1918, her married name became Beauclerk. She was appointed Knight Grand Cross, Order of the British Empire (G.B.E.) in 1919.1 She was appointed Dame of Grace, Most Venerable Order of the Hospital of St. John of Jerusalem (D.G.St.J.)1
Children of Lady Beatrix Frances Petty-FitzMaurice and Henry de la Poer Beresford, 6th Marquess of Waterford
- Lady Blanche Maud de la Poer Beresford+2 b. 1898, d. 29 Sep 1940
- Lady Katharine Nora de la Poer Beresford+2 b. 1899, d. 1991
- John Charles de la Poer Beresford, 7th Marquess of Waterford+2 b. 6 Jan 1901, d. 25 Sep 1934
- Lady Beatrix Patricia de la Poer Beresford+2 b. 1902
- Lord William Mostyn de la Poer Beresford+2 b. 30 May 1905, d. 24 Nov 1973
- Lt.-Cdr. Lord Hugh Tristram de la Poer Beresford2 b. 1 Oct 1908, d. 23 May 1941
Henry de la Poer Beresford, 6th Marquess of Waterford 
He was educated at Eton College, Windsor, Berkshire, England.1 He succeeded as the 7th Viscount Tyrone [I., 1720] on 23 October 1895.1 He succeeded as the 7th Earl of Tyrone [I., 1746] on 23 October 1895.1 He succeeded as the 6th Baron Tyrone, of Haverfordwest, co. Pembroke [G.B., 1786] on 23 October 1895.1 He succeeded as the 6th Marquess of Waterford [I., 1786] on 23 October 1895.1 He succeeded as the 7th Baron Beresford, of Beresford, co. Cavan [I., 1720] on 23 October 1895.1 He succeeded as the 10th Baronet Beresford, of Coleraine, co. Londonderry [I., 1665] on 23 October 1895.1 He gained the rank of Lieutenant in the Royal Horse Guards.1 He was appointed Knight of Grace, Most Venerable Order of the Hospital of St. John of Jerusalem (K.G.St.J.)1 He fought in the Boer War in 1902.1 He was appointed Knight, Order of St. Patrick (K.P.) in 1902.1 He partipicated in an ordinance; Deputy Lieutenant (D.L.) of Northumberland.1 He held the office of Deputy Lieutenant (D.L.) of County Waterford.1
Children of Henry de la Poer Beresford, 6th Marquess of Waterford and Lady Beatrix Frances Petty-FitzMaurice
- Lady Blanche Maud de la Poer Beresford+1 b. 1898, d. 29 Sep 1940
- Lady Katharine Nora de la Poer Beresford+2 b. 1899, d. 1991
- John Charles de la Poer Beresford, 7th Marquess of Waterford+1 b. 6 Jan 1901, d. 25 Sep 1934
- Lady Beatrix Patricia de la Poer Beresford+2,1 b. 1902
- Lord William Mostyn de la Poer Beresford+1 b. 30 May 1905, d. 24 Nov 1973
- Lt.-Cdr. Lord Hugh Tristram de la Poer Beresford1 b. 1 Oct 1908, d. 23 May 1941
Hawise de Quincy1
After her marriage, Hawise de Quincy was styled as Countess of Oxford.
Children of Hawise de Quincy and Hugh de Vere, 4th Earl of Oxford
- Lady Isabel de Vere+
- Lady Margaret de Vere
- Lady Laura de Vere+1 d. 1292
- Robert de Vere, 5th Earl of Oxford+ b. c 1240, d. b 7 Sep 1296
- [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 I, page 196. Hereinafter cited as The Complete Peerage.
- [S37] BP2003 volume 3, page 3464. See link for full details for this source. Hereinafter cited as. [S37]
Robert de Vere, 6th Earl of Oxford1 
He succeeded as the 6th Earl of Oxford [E., 1142] before 7 September 1296.1 He fought in the Battle of Falkirk in 1298.1 He unsuccessfully tried to have his father’s Hereditary Master Chamberlainship of England restored to him.1
Child of Robert de Vere, 6th Earl of Oxford and Margaret de Mortimer
- Sir Thomas de Vere1 b. c 1282, d. b 12 May 1329
- [S37] BP2003 volume 3, page 3464. See link for full details for this source. Hereinafter cited as. [S37]
Alice de Sandford1
After her marriage, Alice de Sandford was styled as Countess of Oxford.
Children of Alice de Sandford and Robert de Vere, 5th Earl of Oxford
- Joan de Vere+1 d. c 23 Nov 1293
- Hawise de Vere1 d. a 1296
- John de Vere1
- Sir Alphonsus de Vere+1 b. a 1257, d. b 20 Dec 1328
- Hugh de Vere, 1st Lord de Vere1 b. fr Jun 1257 – Mar 1258/59, d. a 22 May 1319
- Robert de Vere, 6th Earl of Oxford+1 b. c 24 Jun 1257, d. 17 Apr 1331
- Gilbert de Vere1 b. c 1264, d. Sep 1289
- Philip de Vere1 b. c 1266
Sir Alphonsus de Vere1 
Child of Sir Alphonsus de Vere and Jane Foliot
- John de Vere, 7th Earl of Oxford+1 b. c 12 Mar 1311/12, d. Jan 1359
- [S37] BP2003 volume 3, page 3464. See link for full details for this source. Hereinafter cited as. [S37]
Jane Foliot1 
Child of Jane Foliot and Sir Alphonsus de Vere
- John de Vere, 7th Earl of Oxford+1 b. c 12 Mar 1311/12, d. Jan 1359
- [S37] BP2003 volume 3, page 3464. See link for full details for this source. Hereinafter cited as. [S37]
William Richard Annesley, 4th Earl Annesley1 
He succeeded as the 4th Earl Annesley, of Castlewellan, co. Down [I., 1789] on 25 August 1838.1 He succeeded as the 5th Viscount Glerawly, of co. Fermanagh [I., 1766] on 25 August 1838.1 He succeeded as the 5th Baron Annesley, of Castle Wellan, co. Down [I., 1758] on 25 August 1838.1 He held the office of Member of Parliament (M.P.) (Conservative) for Great Grimsby between 1852 and 1857.1 He held the office of Representative Peer [Ireland] between 1867 and 1874.1,3
- [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 I, page 171. Hereinafter cited as The Complete Peerage.
- [S6] Cokayne, and others, The Complete Peerage, volume I, page 172.
- [S8] BP1999 volume 1, page 83. See link for full details for this source. Hereinafter cited as. [S8]
Maud de Badlesmere1 
After her marriage, Maud de Badlesmere was styled as Countess of Oxford.
Children of Maud de Badlesmere and John de Vere, 7th Earl of Oxford
- Elizabeth de Vere+2 d. 23 Sep 1375
- Robert de Vere2 d. b 1359
- Margaret de Vere+3 d. 15 Jun 1398
- Maud de Vere4 d. 1359
- John de Vere2 b. c Dec 1335, d. b 23 Jun 1350
- Thomas de Vere, 8th Earl of Oxford+2 b. c 1336, d. 18 Sep 1371
- Aubrey de Vere, 10th Earl of Oxford+2 b. c 1339, d. 23 Apr 1400
- [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 I, page 373. Hereinafter cited as The Complete Peerage.
- [S37] BP2003 volume 3, page 3464. See link for full details for this source. Hereinafter cited as. [S37]
- [S6] Cokayne, and others, The Complete Peerage, volume II, page 61.
- [S37] BP2003. [S37]
Thomas de Vere, 8th Earl of Oxford1 
He held the office of Hereditary Master Chamberlain of England between 1359 and 1371.1 He fought in the France Campaign from 1359 to 1360.1 He succeeded as the 8th Earl of Oxford [E., 1142] on 24 January 1359/60.1
Child of Thomas de Vere, 8th Earl of Oxford and Matilda de Ufford
- Robert de Vere, 9th Earl of Oxford1 b. 16 Jan 1361/62, d. 1392