Hi Simon
Got hold of the book today. In fact, there are two volumes, both limited editions of 500 copies. The entry for Henry Bertrand in Volume 1 reads:
"Ringmaster, equestrian director and circus manager. Born about 1849, the son of Anthony Bertrand. Married Julia Robinson. Daughter, Agnes Julia, born c1863. Manager of Sanger's Hippodrome and Menagerie (travelling), and Sanger's National Amphitheatre, London, in 1875, altogether for fourteen years. Ringmaster at Hengler's between 1885 and 1888. General Manager of Wulff's circus, at Hengler's Circus Building, London, and in the provinces, during 1892-4. Manager of George Gilbert's Modern Circus, and the Chesterfield Grand Circus of Varieties in 1895. Manager of George Arundale's Royal English Circus, Birmingham, for a record ten month season, 1897-8. Died in Birmingham, 4th April 1898. Permanent address, in 1898, was in Gateshead-on-Tyne."
Above him, there's an entry for another Bertrand - named only by his surname followed by: "Gymnast. Mark Dove. Died 18th October 1867."
There are no entries for the name Bertrand in Volume 2.
I was in correspondence with the author John Turner about 15 years ago and met him once in London when he gave a talk at the Society of Genealogists about tracing circus ancestors: a wonderful researcher and very generous with his help to family historians, myself included. He sadly died perhaps 10 years ago, at a point, I think, when he was planning to put his databases online so that more people could access them.
Hope this helps.
Sharon