Titus Andronicus was a play by William Shakespeare.
When Shakespeare caught the Fifth Doctor quoting his material back to him, he warned the Doctor that he had very good lawyers, noting the fact that after he wrote Titus Andronicus he managed to obtain copyright over the whole Roman Empire. Shakespeare claimed to have been "very responsible" with this power, having "never let them get presented as figures of fun". (AUDIO: The Kingmaker)