Gervase Alan de Peyer (born 11 April 1926) is an English clarinetist and conductor.Gervase de Peyer was born in London and attended Bedales School. He was awarded a scholarship to the Royal College of Music where he studied clarinet with Frederick Thurston and piano with Arthur Alexander. Towards the end of World War II, when he was aged 18, he joined the Royal Marines Band Service. De Peyer returned to the Royal College of Music after the war and subsequently studied in Paris with Louis Cahuzac.