Flt-Lt David William Frederick Bonham-Carter CB, DFC

  photo: 1921, aged 20

  photo: 1930, aged 29

 No, I don't think he's related to Helena. He was related to Florence Nightingale, though!

b. 22 February 1901; an RAF Officer at Martlesham Heath in 1936, later Group Capt and Station Commander at RAF Waddington in WWII, despite being stone deaf by then; seconded to RCAF and involved in Canada with the Empire Training Plan, then Air Commodore (first President of Newark Air Museum).

Died 1974 in Ipswich.