Beaumont was the son of the
Royal Air Force officer and film producer
Francis William Beaumont and his first wife, Enid Ripley. His paternal grandmother,
Sibyl Hathaway, ascended as the Dame of Sark six months before his birth. Francis and Enid divorced in 1937 as a result of his adultery with an actress,
Mary Lawson, whom he subsequently married. Beaumont's father and stepmother were killed on 4 May 1941, during the
Liverpool Blitz, which left the 14-year-old Beaumont as heir to his grandmother. Beaumont worked as a structural design engineer for the
British Aircraft Corporation in
Bristol before moving to
Shoreham-by-Sea, where he worked on
Beagle Aircraft. In 1956, Beaumont married Diana La Trobe-Bateman, and the couple had two sons,
Christopher and Anthony. == Seigneurship ==