#1 Robert Douglas 1939- is the author of Night song of the last tram: A Glasgow childhood .
(February 2011) No further information about #2 Robert Douglas, author of Island heritage : architecture of the Bahamas, and other books about Carribbean architecture.
#3 Robert Douglas 1594-1674 was the author of The Form and Order of the Coronation of Charles the Second.
#4 Sir Robert Douglas (1694-1770)of Glenbervie, was the author of The Peerage of Scotland.
#5 Robert Douglas M.D. fl. 1750 was the author of An essay concerning the generation of heat in animals.