Prince John: Right now we have more pressing matters.
Guy: Robin Hood.
Prince John: Now, obviously, he has to hang. Isn't it to be hanged?

The only problem is, the people
do rather insist on adoring him still. They still love him?
Yes and yes. It doesn't have to be "be hanged."

"I'll send you to hell, Black Bart, even if I hang for it."
I see. Thank you for the explanation!