Early in Thomas Kyd's The Spanish Tragedy, Hieronymo's son Horatio is murdered by a rival. The murder unhinges Hieronymo, driving him mad even as he plots revenge against his son's killers.
The line “Ile fit you“ (“I'll oblige you”) is from Act 4, Scene 2, where Hieronymo convinces the murderers to take part in a play to be performed for the king.