Tybalt is the main
antagonist in
William Shakespeare's play
Romeo and Juliet. He is Lady Capulet's nephew,
Juliet's short-tempered cousin, and
Romeo's rival. Tybalt shares the same name as the character Tibert/Tybalt the "Prince of Cats" in
Reynard the Fox, a point of mockery in the play.
Mercutio repeatedly calls Tybalt "King of Cats" (perhaps referring not only to Reynard but to the
Italian word
cazzo "penis" as well).
Luigi da Porto adapted the story as
Giulietta e Romeo and included it in his
Historia novellamente ritrovata di due Nobili Amanti published in 1530. Da Porto drew on
Pyramus and Thisbe and
Giovanni Boccaccio's
Decameron. He gave it much of its modern form, including the lovers' names, the rival families of Montecchi and Capuleti, and the location in
Verona. He also introduces characters corresponding to Shakespeare's
Mercutio, Tybalt, and
Paris. Da Porto presents his tale as historically true and claims it took place in the days of
Bartolomeo II della Scala (a century earlier than Salernitano). Montague and Capulet were actual 13th-century political factions, but the only connection between them is a mention in
Dante's
Purgatorio as an example of civil dissension.