The term CAPULET MURDERED BY ROMEO is referring to the death of Tybalt, a Capulet who was killed by Romeo in a duel. Tybalt was a cousin of Juliet and a member of the Capulet family, which was involved in a long-standing feud with the Montague family. Romeo, a Montague, killed Tybalt in a fit of rage after Tybalt killed Romeo's friend Mercutio. This event ultimately led to Romeo and Juliet's tragic end.