1 child, Mark Sean Richard. Bachelor of Arts with honors, Exeter University, England, 1971. Freelance author, chess player, London, 1971-1979.
Chairman Philidor Software, London, 1979-1981. Managing director Intelligent Software, London, since 1981, Entersoft, London, since 1984. Director Enterprise Computers, London, Mazedata, London.
- Chairman Philidor Software, London, 1979-1981. Editor: Oxford Encyclopedia of Chess Games, Vol. Contributor articles to professional journals.