I've seen some bollocks written about beer history, but this take the whole McVitie's warehouse:
"Most barley wines are golden or copper colored. One style that is a deep rich copper brown is represenetd by Russian Imperial Stout brewed by the Courage Brewery in England. It is a style unto itself, not really a stout in the traditional sense , but historically named for its strength."
"The Complete Joy of Homebrewing" by Charlie Papazian, page 135.
Even the worst writers realise Russian Stout is, er, a Stout. They might name the wrong Russian monarch as its recipient, or talk twaddle about its strength being to avoid freezing in transit. But they do get its basic Stoutiness right.
He can't have ever tried the beer. It's pitch black and the flavour is, well, Stouty.