According to the book
The Harmonious Circle, it's very likely that a
Tsarist spy, name of Narunov, operating in the Tibet of the time of the
Great Game - the
info-war happening around
Central Asia at the end of the 19th century, as described in
Rudyard Kipling's
Kim - was in fact Gurdjieff.
From what I remember reading in that book, Narunov was arrested by the British authorities, en-route to Tibet, having in his possession some 200 Tibetan singing bowls. Finding no good reason to detain him beyond a few days, the British allowed Narunov to go on his way.
There is a reference in the British records to a mysterious 'Koukandsen', Narunov's contact. This was explained in the book as being a mis-spelling of "Cook and Son" the travel agents.
A somewhat Gurdjieff-like photo of Narunov is given, and some biographical correspondences cited; also it's noted that in Meetings with Remarkable Men, when Gurdjieff states that his profession gives him entry into many closed circles, this fits remarkably well with the hypothesis that he was employed as a spy.