OK, how do you refer to Robert Strutt, fourth Baron Rayleigh?
Can you, after first mentioning him in a piece of writing, susbequently refer to him as "Strutt", or should you subsequently refer to him as "Lord Rayleigh". I've seen it both. Is there a reason to choose one over the other or is it just important to keep it consistent?
And (less important for the purposes of my writing) why isn't he just called "Lord Strutt"?