The aeronautical designer John Carver Meadows Frost is credited by Fairey Ltd (or was it AV Roe?) as having designed the Hengist Glider, which is interesting since my dad CS Wills said he’d worked on a design for a powered glider named Hengist way earlier than Frost is said to have done so. I’m sure CSW came up with the name. I need to do more research.