Yes, that same Knight.

Although his theories were pretty much debunked regarding Jack the Ripper, the Masonic connection doesn’t seem too far-fetched. I once had a good conversation with a Master Freemason of the Whitehall Lodge who held the film in high regard and he thought it ‘hit the nail on the head’ in general, but not in particular to the people in question — which I think goes without saying as Holmes and Watson are fictitious.