The word "Marry" is an exclamation used in Shakespeare's time. Its best definition is "indeed!". For example, when Gregory says to Sampson:
No, marry; I fear thee.
The translation can be:
No, indeed; I fear thee.
I have included a good link to Shakespearean terms to help you in your reading.
"Marry" means mary our mother in romeo and juliet
it can also mean marraige
hope that helps!!!