The Merchant of Venice live in a ghetto protected by Christian guards. Shakespeare's play may be seen as a continuation of this tradition. The title page of the Quarto indicates that the play was sometimes known as "The Jew of Venice" in its day, which suggests that it was seen as similar to Marlowe's "The Jew of Malta". One interpretation of the play's structure is that Shakespeare meant to contrast the mercy of the main Christian characters with the vengefulness of a Jew, who lacks the religious grace to comprehend mercy. Similarly, it is possible that Shakespeare meant Shylock's forced conversion to Christianity to
Jessica (The Merchant of Venice) ultimately stems from medieval archetypal plots and characters. The Christian in love with a Jewess appears frequently in "exemplum" from the 13th to the 15th century. Beatrice D. Brown, in her 1929 article, "Mediaeval Prototypes of Lorenzo and Jessica", finds the most direct match in "… MS. Royal 7 D. 1, a collection of theological pieces probably compiled by a Dominican friar at or near Cambridge in the thirteenth century." It contains a spendthrift Christian lover, the fair Jewess, the rich old father, the lovers robbing the father, and the father's conflicted grief over his daughter's betrayal and the loss