Ah, Shakespeare. We all love him, we all hate him. So famous, and yet he couldn't even settle on a definitive spelling of his name! Fancy his writing may have looked, here I want to give some unused (for the most part, they are still used in some dialects and are often used to make a text seem "archaic") today pronouns some love, and what better way to do it then falsely acredit them to Shakespeare!

“Love all, trust a few,
Do wrong to none: be able for thine enemy
Rather in power than use; and keep thy friend
Under thy own life's key: be check'd for silence,
But never tax'd for speech.”
― William Shakespeare, All's Well That Ends Well

Notice the "thine" and "thy"? These are second person personal pronouns in the Genitive case (or Possesive if you will, both are the same case.), ergo, they are predominantly used to display "possesion" of the following word. Time for a curious fun fact! "Thine" is used when the following word starts with a vowel, and "thy" when it starts with a consonant.