As the movie unfolds you would notice that marlowe keeps supplying ideas for the "Ethelred and the Pirate King" play. He ends up writing a lot of it indirectly.
I noticed that the little boy's full name is mentioned and it is clear he would be young teens. (but can't rember the name John Webster? maybe). I googled the name.
I find that there was a playwright and poet who would have been about 13 in 1593 (the time of writing of Romeo and Juliet). In about 1620 area he wrote a couple of really awful sonnets that have to do with death and dying, the gallows and such. Very, very morbid and nasty. I'm pretty sure that the little boy snitch who fed mice to a cat (if I remember right) is supposed to be that guy. I'm wondering how much other stuff is buried in there, the writers must have had a ball writing the movie script.
added
I seem to have remembered correctly (maybe) this site praises his work a bit.
http://www.imagi-nation.com/moonstruck/clsc27.html
from that site:
Webster has sometimes been criticized for the limited scope of his plays. He knows nothing, for instance, of the tenderness and pleasant fantasy of Shakespeare. It was mankind's anguish and evil alone which captured his imagination
[This message has been edited by NosyNed, 11-07-2003]