It has been said that he was drawn from General Gordon.

I am not conscious of having taken Gordon for David's prototype, though, as I was saturated with all that had been written about Gordon, there is no doubt that something of that great man may have found its way into the character of David Claridge.

The true origin of David Claridge, however, may be found in a short story called 'All the World's Mad', in Donovan Pasha, which was originally published by Lady Randolph Churchill in an ambitious but defunct magazine called 'The Anglo-Saxon Review'.
The truth is that David Claridge had his origin in a fairly close understanding of, and interest in, Quaker life.

I had Quaker relatives through the marriage of a connection of my mother, and the original of Benn Claridge, the uncle of David, is still alive, a very old man, who in my boyhood days wore the broad brim and the straight preacher-like coat of the old-fashioned Quaker.

The grandmother of my wife was also a Quaker, and used the "thee" and "thou" until the day of her death.
Here let me say that criticism came to me from several quarters both in England and America on the use of these words thee and thou, and statements were made that the kind of speech which I put into David Claridge's mouth was not Quaker speech.