There was this British caricaturist called John Leech.
A particular sketch of his, ___X___, was commissioned by a famous author, __Y__, in order to write his novel, __Z__, based on this sketch(__X__).
A new word was inducted into the English language, __W__, named after the protagonist in the novel __Z__.
This word is typically a used to describe someone who's miserly in his ways.
Id X, Y, Z and W.
Id all, and you get 15 points, a bonus of +5.
A hint, if you need it. All related to the spirit of the times!