How many children had Lady Macbeth?

Dear Charles,

Sometimes, though probably only in the hands of a genius, such questions can lead to wonderful literary meditations and even the occasional revelation.  John Sanford  has written a series of books comprised of short essays that use this sort of question as a starting point. The only title that comes to me now is "Heathcliff's Toothbrush."

Highly recommended.  For your amusement I include below the table of contents from one of his book (I italicized the ones I thought might appeal to Nabokov).

Come to think of it, wasn't Nabokov partial to such questions (what kind of bug exactly was Gregor Samsa?)

Carolyn