Why does Corrigan give William money in the play Back There?

You're asking about the play "Back There" by A.R. Gurney. While there is a character named Corrigan in the play, he does not give William money.

Could you please clarify:

* Is "William" the correct name of the character? There is a character named William, but he's not the one receiving money.

* Are you referring to a different play?

Please provide more context so I can accurately answer your question.