Charles Hepburn-Stuart-Forbes-Trefusis, 21st Baron Clinton
Trefusis was the eldest son of the 20th Baron Clinton and his wife, Harriet. Educated at Oxford he played polo with the University team and won the Varsity Match against Cambridge in 1883. On 1 June 1886, he married Lady Jane McDonnell (15 June 1863 – 27 August 1953) (a daughter of the 5th Earl of Antrim) and they had two daughters:
- Hon. Harriet (14 November 1887 – 15 March 1958), married Maj. Henry Nevile Fane (1883 – 2 August 1947). They had seven children.
- Hon. Fenella (19 August 1889 – 19 July 1966), married Hon. John Bowes-Lyon. They had five children.
From 1898 until he succeeded to his father's title in 1904, Trefusis was Convener of Kincardineshire County Council. In 1911, Lord Clinton was admitted to the Duchy of Cornwall Council and was appointed the duchy's Keeper of the Privy Seal in 1913 and Lord Warden of the Stannaries in 1921. From 1918-19, he was Joint Parliamentary Secretary to the Board of Agriculture and Fisheries, Chairman of the Forestry Commission from 1927–29, and a director of the Southern Railway. Lord Clinton had also been admitted to the Privy Council in 1927 and on his retirement in 1933, he was appointed a GCVO.
Five of his granddaughters were born mentally handicapped and institutionalized: Nerissa Bowes-Lyon (1919–1986), Katherine Bowes-Lyon (1926–2014), Idonea Elizabeth Fane (1912–2001), Etheldreda Flavia Fane (1922–1996), and Rosemary Jean Fane (1914–1972).
- "Polo. Oxford v. Cambridge". The Times. 18 June 1883.
- Jones, Kevin P. "Biographies of chairmen, managers & other senior railway officers". SteamIndex. Retrieved 2009-03-16.
The Earl of Mount Edgcumbe
| Keeper of the Privy Seal of the Duchy of Cornwall
1913 – 1933
The Earl of Radnor
The Lord Balfour of Burleigh
| Lord Warden of the Stannaries|
1921 – 1933
The Duke of Marlborough
The Viscount Goschen
| Joint Parliamentary Secretary
to the Board of Agriculture and Fisheries
1918 – 1919
With: Sir Richard Winfrey
Sir Arthur Griffith-Boscawen
|Peerage of England|
| Baron Clinton
1904 – 1957
Title next held byGerald Fane-Trefusis