Who says the following and why?
Therefore be patient, take no note of him:
It is my will; the which if thou respect,
Show a fair presence and put off these frowns,
An ill-beseeming semblance for a feast.
Mercutio is telling Romeo to cheer up.
Capulet is telling Tybalt to calm down.
The nurse is telling Juliet to ignore Romeo.
Romeo is telling Benvolio to ignore Tybalt.