Background
Trench was the son of Clive Newcome Trench and Kathleen Maud Marion McIvor.
Trench was the son of Clive Newcome Trench and Kathleen Maud Marion McIvor.
He was educated at Eton and Corpus Christi College, Cambridge.
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 District of Columbia, before serving as British Ambassador to the Republic of of Korea (1969-1971) and then to Portugal (1974-1976). In 1990, after his retirement, he inherited from a cousin the Irish peerage of Baron Ashtown, which did not give him a seat in the House of Lords.