Bel-imperia favors Horatio, while her brother, Lorenzo, favors Balthazar.  
Charles Lamb, in his Specimens of English Dramatic Writers, claims that the interpolations made in this play were written by John Webster, not Ben Jonson as scholars up till that time had thought.  The trouble begins when the son of Cyprian disagrees with his sister as to whom she should marry.  Bel-imperia favors Horatio, while her brother, Lorenzo, favors Balthazar.  Lorenzo and Balthazar kill Horatio and hang him to a tree, which brings the ire of Horatio's father, Hieronimo, and pretty much everyone dies.  FTP, name this most famous of the revenge tragedies, a play by Thomas Kyd.
Charles Lamb, in his Specimens of English Dramatic Writers, claims that the interpolations made in this play were written by John Webster, not Ben Jonson as scholars up till that time had thought.  
The Spanish Tragedy