Nina Caroline Ogilvie-Grant, Countess of Seafield1 
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Nina Caroline Ogilvie-Grant, Countess of Seafield was born on 17 April 1906.1 She was the daughter of James Ogilvie-Grant, 11th Earl of Seafield and Mary Elizabeth Nina Townend.1 She married Derek Herbert Ogilvie-Grant-Studley-Herbert, son of John Tatchell Studley and Beatrice Frances de Chair, on 24 January 1930.1 She and Derek Herbert Ogilvie-Grant-Studley-Herbert were divorced in 1957.1 She died on 30 September 1969 at age 63.1
She succeeded as the 12th Viscount of Seafield [S., 1698] on 12 November 1915.1 She succeeded as the 12th Lord Ogilvy of Cullen [S., 1698] on 12 November 1915.1 She succeeded as the 12th Countess of Seafield [S., 1701] on 12 November 1915.1 She succeeded as the 12th Viscount of Reidhaven [S., 1701] on 12 November 1915.1 She succeeded as the 12th Lord Ogilvy of Deskford and Cullen [S., 1701] on 12 November 1915.1
Children of Nina Caroline Ogilvie-Grant, Countess of Seafield and Derek Herbert Ogilvie-Grant-Studley-Herbert
- Ian Derek Francis Ogilvie-Grant, 13th Earl of Seafield+1 b. 20 Mar 1939
- Lady Pauline Anne Ogilvie-Grant+1 b. 26 May 1944, d. 10 Jan 2010
Derek Herbert Ogilvie-Grant-Studley-Herbert1 
Derek Herbert Ogilvie-Grant-Studley-Herbert was the son of John Tatchell Studley and Beatrice Frances de Chair.1 He married Nina Caroline Ogilvie-Grant, Countess of Seafield, daughter of James Ogilvie-Grant, 11th Earl of Seafield and Mary Elizabeth Nina Townend, on 24 January 1930.1 He and Nina Caroline Ogilvie-Grant, Countess of Seafield were divorced in 1957.1 He died on 26 March 1960.1
He was given the name of Derek Herbert Studley at birth.1 In 1939 his name was legally changed to Derek Herbert Ogilvie-Grant-Studley-Herbert by Deed Poll.1
Children of Derek Herbert Ogilvie-Grant-Studley-Herbert and Nina Caroline Ogilvie-Grant, Countess of Seafield
- Ian Derek Francis Ogilvie-Grant, 13th Earl of Seafield+1 b. 20 Mar 1939
- Lady Pauline Anne Ogilvie-Grant+1 b. 26 May 1944, d. 10 Jan 2010
John Tatchell Studley1 
He lived at Seaborough Court, Dorset, EnglandG.1
Child of John Tatchell Studley and Beatrice Frances de Chair
- Derek Herbert Ogilvie-Grant-Studley-Herbert+1 d. 26 Mar 1960
Beatrice Frances de Chair1 
Her married name became Studley.
Child of Beatrice Frances de Chair and John Tatchell Studley
- Derek Herbert Ogilvie-Grant-Studley-Herbert+1 d. 26 Mar 1960
Dudley Raikes de Chair1 
Children of Dudley Raikes de Chair
- Admiral Sir Dudley Rawson Stratford de Chair+2 b. 30 Aug 1864, d. 17 Aug 1958
- Beatrice Frances de Chair+1 b. 9 May 1873, d. 6 Aug 1953
- [S37] BP2003 volume 3, page 3552. See link for full details for this source. Hereinafter cited as. [S37]
- [S35] BLG1965 volume 1, page 195. See link for full details for this source. Hereinafter cited as. [S35]
- [S1122] Peerage News, online http://peeragenews.blogspot.co.nz/. Hereinafter cited as Peerage News.
Ian Derek Francis Ogilvie-Grant, 13th Earl of Seafield
He succeeded as the 13th Lord Ogilvy of Deskford and Cullen [S., 1701] on 30 September 1969.1 He succeeded as the 13th Lord Ogilvy of Cullen [S., 1698] on 30 September 1969.1 He succeeded as the 13th Earl of Seafield [S., 1701] on 30 September 1969.1 He succeeded as the 13th Viscount of Reidhaven [S., 1701] on 30 September 1969.1 He succeeded as the 13th Viscount of Seafield [S., 1698] on 30 September 1969.1
Children of Ian Derek Francis Ogilvie-Grant, 13th Earl of Seafield and Mary Dawn Mackenzie Illingworth
- James Andrew Ogilvie-Grant, Viscount Reidhaven1 b. 30 Nov 1963
- Hon. Alexander Derek Henry Ogilvie-Grant+1 b. 26 Jan 1966
Mary Dawn Mackenzie Illingworth1
Her married name became Ogilvie-Grant. After her marriage, Mary Dawn Mackenzie Illingworth was styled as Countess of Seafield on 30 September 1969.
Children of Mary Dawn Mackenzie Illingworth and Ian Derek Francis Ogilvie-Grant, 13th Earl of Seafield
- James Andrew Ogilvie-Grant, Viscount Reidhaven1 b. 30 Nov 1963
- Hon. Alexander Derek Henry Ogilvie-Grant+1 b. 26 Jan 1966
- [S37] BP2003 volume 3, page 3550. See link for full details for this source. Hereinafter cited as. [S37]
Henry George Coats Illingworth
He lived at Bayswater, London, England.2
Children of Henry George Coats Illingworth and Violet Dawn Gold
- [S9929] Mark Illingworth, “re: Illingworth Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 25 May2024. Hereinafter cited as “re: Illingworth Family.”
- [S37] BP2003 volume 3, page 3550. See link for full details for this source. Hereinafter cited as. [S37]
- [S466] Notices, The Telegraph, London, UK. Hereinafter cited as The Telegraph.
Violet Dawn Gold
Her married name became Illingworth.1
Children of Violet Dawn Gold and Henry George Coats Illingworth
- Mary Dawn Mackenzie Illingworth+
- James Henry Harcourt Illingworth1 b. 3 Jul 1935
- [S9929] Mark Illingworth, “re: Illingworth Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 25 May2024. Hereinafter cited as “re: Illingworth Family.”
Sir Harcourt Gilbey Gold
Child of Sir Harcourt Gilbey Gold

