Marian: Oh, Robin, you're so brave and impetuous.
Hiss: A perfect fit, Sire! Looks most becoming! You look regal, dignified, sincere, masterful, noble.
Prince John: Don't overdo it, Hiss.
Marian: Oh, Clucky, surely he must know how much I really love him.
Clucky: But of course, my dear. Believe me, someday soon, your Uncle King Richard will have an outlaw for an in-law.
Little John: I am Sir Reginald, Duke of Chutney. And don't stick your tongue out at me, kid.
Little John: You know somethin', Robin. I was just wonderin', are we good guys or bad guys? You know, I mean, uh? Our robbin' the rich to feed the poor.
Robin Hood: Rob? Tsk tsk tsk. That's a naughty word. We never rob. We just sort of borrow a bit from those who can afford it.
Little John: Borrow? Boy, are we in debt.
Little John: Hey! Who's drivin' this flyin' umbrella?
Tagalong: Good bye, Mr. Robin Hood. Come again at my birthday.
Robin Hood: Tell me, young man, how old are you?
Skippy: Gosh, I'm seven years old! Going on eight.
Robin Hood: Seven? That does make you the man of the house.
Alan-A-Dale: Oh, incidentally, I'm Alan-A-Dale, a minstrel. That's an old time folk singer. My job is to tell it like it is, or was, or whatever.
Clucky: As your lady in waiting, I'm waiting.
Little John: The prince? Wait a minute. There's a law against robbing royalty. I'll catch you later.
Answer: Either he figured it out on his own or Sir Hiss told him.
How would Sir Hiss know that it was Robin Hood who robbed the royal?