Algy Longworth

He had told [Algy] Longworth more or less on the spur of the moment, knowing that gentleman's capabilities to  nicety. Under a cloak of assumed flippancy he concealed an iron nerve which had never ye failed him; and, in spite of the fact that he wore and entirely unnecessary eyeglass, he could see farther into a brick wall than mot of the people who called him a fool.

(from Bulldog Drummond, by H. C. McNeile)

In most of the Bulldog Drummond, Longworth is portrayed as a virtually useless fop, utterly without common sense or even very much intelligence.