What is the shared occupation of Donald Cammell and Leopold Wharton?
Donald Cammell Donald Seaton Cammell (17 January 1934 – 24 April 1996) was a Scottish film director who has a cult reputation thanks to his debut film "Performance", which he co-directed with Nicolas Roeg.
Donald Welbourn Donald Welbourn FREng was an English Engineer, and a pioneer of computer-aided design and computer-aided manufacturing (CAD/CAM) research and development in the United Kingdom.