Hieronimo is one of the principal characters in Thomas Kyd's The Spanish Tragedy. He is the knight marshal of Spain and the father of Horatio. In the onset of the play he is a dedicated servant to the King of Spain.[1] However, the difference in social status becomes apparent when his son is wrongfully murdered by Balthazar, the son of the viceroy of Portugal, and Lorenzo, the son of the Duke of Spain, which eventually causes tragic events to unfold.[2] In order to revenge the death of his son, Hieronimo takes on additional roles, a playwright and an actor. He uses his position in the King's court to write and perform a play within a play. This performance mirrors the actual events surrounding Horatio's death, and within this show Hieronimo commits his own acts of revenge against the perpetrators.[3] Many critics see Hieronimo as a dynamic character that by the end of the tragedy has become obsessed with taking revenge against the murderers of his son. Literature of 16th century England was greatly concerned with plots of deceit, confusion and madness as its central theme. The Spanish Tragedy is no different.[4]