I was reading the clive barker book "Mister B Gone" and it is obviously a pun or some such name for "Mister be gone" as in "sir, go away". I got to thinking about this and this is actually fairly common way of doing things in titles or names. "I P. Freely" is a old simpsons joke.
Is there a name for this kind of pun? Where you hide a sentence inside a title?