John Aymard Morton Mansel-Pleydell was the son of Ralph and Marguerite Marie Mansel-Pleydell. His father fought in World War One. John Mansel-Pleydell was born on 22nd November 1920. Second Lieutenant John Aymard Morton Mansel-Pleydell was serving with the 1/5th Battalion of the Leicestershire Regiment when he died on 17th November 1940. He was 19 years old.