Jessica (The Merchant of Venice) "Il Pecorone" () and Richard Robinson's English translation of the "Gesta Romanorum" (1577), but neither of these contain the Jessica–Lorenzo plot, nor give their Shylock-analogues a daughter. For these elements Shakespeare probably mined Masuccio Salernitano's "Il Novellino" (1476) and Christopher Marlowe's "The Jew of Malta" (). In the 14th story of "Il Novellino" we have most of the elements of the Jessica–Lorenzo plot: a daughter guarded by a rich but miserly father; the lovers eloping with her father's gold and jewels; the father's despair, in equal measures, for the loss of both daughter and treasure; and the lovers' eventual marriage
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