Nigel Clive Cosby Trench, 7th Baron Ashtown KCMG (27 October 1916 – 6 March 2010) was a British peer and diplomat.
After rising to the rank of Major in the King's Royal Rifle Corps during the Second World War, Trench spent some thirty years in the British foreign service, with postings which included Tokyo and Washington D.C., before serving as British Ambassador to the Republic of Korea (1969–71) and then to Portugal (1974–76).
He married Marcelle Catherine Clotterbooke Patijn van Kloetinge in 1939, with whom he had one son, Roderick Trench, 8th Baron Ashtown. He succeeded a cousin as Baron Ashtown in 1990. His wife died in 1994.
He died in London in 2010 and was succeeded as Baron Ashtown by his son, Roderick.
- England & Wales, Civil Registration Birth Index, 1916-2007
- "No. 44004". The London Gazette (Supplement). 3 June 1966. p. 6532.
- "No. 46919". The London Gazette (Supplement). 4 June 1976. p. 8018.
- Charles Mosley, editor, Burke's Peerage and Baronetage, 106th edition, 2 volumes (Crans, Switzerland: Burke's Peerage (Genealogical Books) Ltd, 1999), volume 1, page 123.
|Peerage of Ireland|
Christopher Oliver Trench
| Baron Ashtown