Sir Walter Bullivant up. In the first chapter of the novel, the reader also learns of Bullivant's son Harry Bullivant, who lost his life while spying in the Middle East in the guise of a muleteer. Sir Walter Bullivant Sir Walter Bullivant is a fictional character created by the Scottish thriller writer John Buchan for his series of novels featuring the spy Richard Hannay. He plays small but significant roles in both "The Thirty-Nine Steps" and "Greenmantle". Sir Walter is a senior mandarin at the Foreign Office in the years leading up to World War I. He is the archetypal spymaster — gruff,
David Hannay (producer) Gillian are the children of theatre actress and writer Mary Stuart (Hannah) and theatre and radio actor-producer-director Norman Hannah. David Hannay (producer) David Hannay (23 June 1939 – 31 March 2014) was a New Zealand Australian film producer. He worked with Greater Union and was an independent producer from 1977. Hannay was born in Wellington and attended Scots College. His first job in the industry was as an extras casting assistant for film "Summer of the Seventeenth Doll". Hannay produced his first feature film The Set in 1968 and then moved to television and became head of production for Gemini