Background
He was the son of Sir Humphrey de Trafford, 3rd, and Violet Alice Maud Franklin.
He was the son of Sir Humphrey de Trafford, 3rd, and Violet Alice Maud Franklin.
Trafford was educated at The Oratory School and the Royal Military College, Sandhurst.
After training he was commissioned into the Coldstream Guards as an officer Trafford also served as Steward of The Jockey Club from 1934-1937 and then again in 1944 and 1951. On the death of his father, on 10 January 1929, Trafford became the fourth Trafford served as a Justice of the Peace and a Deputy Lieutenant of Hertfordshire and in 1945 as High Sheriff of Hertfordshire.
Sir Humphrey Edmund de Trafford died on 6 October 1971 at the age of 79.
He fought with distinction in the First World War and was awarded the Military Cross in 1917. In 1926, he purchased the Newsells Park Estate, Barkway near Royston, Hertfordshire as a home for his family and established a stud farm there, from which he bred most of his famous racehorses including Alcide who won the 1958 Saint Leger Stakes and the 1959 King George VI and Queen Elizabeth Stakes and Parthia, who won the 1959 Epsom Derby. Other notable horses included Papillio who won the 1953 Goodwood Stakes and Approval who won the Observer Gold Cup at Doncaster in 1969 and the Dante Stakes at York in 1970.
Trafford was an amateur rider and racehorse owner and a member of the Jockey Club and its National Hunt Committee.