Question: The Anglo-Irish novelist's 15th novel, The Black Prince, first published in 1973, alludes mainly to what?

Context paragraphs:
Edward the Black Prince: Edward of Woodstock (15 June 1330 – 8 June 1376), called the Black Prince, was the eldest son of King Edward III and Philippa of Hainault, and the father of King Richard II of England.  He was the first Duke of Cornwall (from 1337), the Prince of Wales (from 1343) and the Prince of Aquitaine (1362–72).

Benveniste: Benveniste, is the surname, byname (see below - the origin of the name) in an old, noble, rich, and scholarly Jewish family of Narbonne, France and northern Spain from the 11th century.  The family was present in the 11th to the 15th centuries in Provence, France, Barcelona, Aragon and Castile' Spain.  Family members received honorary titles from the authorities and were members of the administration of the kingdom of Aragon and Castile.  They were the Baillie ("Bayle") - the Tax Officer and Treasurer, Alfaquim - Senior Advisor to the King and Royal Physician in Barcelona and Aragon in the 12th and 13th centuries.  They held the title of "Nasi" (prince in Hebrew), a name given to members of the House of David, in the Jewish communities (mainly Barcelona) and were prominent religious and secular leaders in the 11th to the 14th centuries.  In the 14th to the 15th century they held the titles of "Benveniste de la Cavalleria"—"of the knights" (a name given by the Templars to their treasurers and tax collectors) and Don—a noble person in Aragon and Castile.  After the expulsion of the Jews from Spain in 1492 they were dispersed mainly to Portugal, Greece - Salonica other parts of the Turkish Empire and North African countries.  In Portugal they were forced to convert to Christianity in 1497 and became one of the rich traders and bankers (the Mendes family) of Europe.  Today the name is borne by families in Europe, the Americas, Asia and Israel.  It was also used as a prænomen.

&quot;O&quot; Is for Outlaw: "O" Is for Outlaw is the 15th novel in Sue Grafton's "Alphabet" series of mystery novels and features Kinsey Millhone, a private eye based in Santa Teresa, California.  The novel’s plot has its roots in the Vietnam War, and features information about Kinsey’s previously unnamed first husband, Mickey, and their brief marriage 14 years before, although there is no interaction between them in the present because Mickey is in a coma throughout the novel's action.

The Black Prince (play): The Black Prince is a Restoration era stage play, a historical tragedy written by Roger Boyle, 1st Earl of Orrery.  It premiered on stage in 1667 and was first published in 1669.  The play relied on influences from contemporaneous French theatre, and contributed to the evolution of the subgenre of heroic drama; yet it also looked back to the Caroline era to assimilate masque-like dramatic effects.

The First Confessor: The Legend of Magda Searus: The First Confessor: The Legend of Magda Searus is Terry Goodkind's 15th novel.  The book is set centuries prior to the main "Sword of Truth" series.  It is the first book that is self-published by Terry Goodkind.  Apart from 300 individually-numbered copies of a Limited Collector's Edition it was originally exclusively available as E-book and Audiobook.  As of July 2015, it was published by TOR Fantasy in hardcover format, and is now available in stores.

The Pure Gold Baby: The Pure Gold Baby is British novelist Margaret Drabble's 19th novel, first published in 2013.  The novel was her first novel to be published in seven years, following "The Sea Lady".  In 2009, Drabble had pledged not to write fiction again, for fear of "repeating herself."

The Night of the Generals (novel): The Night of the Generals: A Novel (German: "Die Nacht der Generale" ) is the 15th novel (of a total of 61) by the German writer Hans Hellmut Kirst, published in 1962.

The First Princess of Wales: The First Princess of Wales (originally published as Sweet Passion's Pain) is a 1984 historical fiction novel by American author Karen Harper.  Set during the 14th-century, it follows the romance between Joan of Kent and Edward, the Black Prince.

The Black Prince (novel): The Black Prince is Iris Murdoch's 15th novel, first published in 1973.  The name of the novel alludes mainly to Hamlet.

Iris Murdoch: Dame Jean Iris Murdoch ( ; 15 July 1919 – 8 February 1999) was an Anglo-Irish novelist and philosopher, best known for her novels about good and evil, sexual relationships, morality, and the power of the unconscious.  Her first published novel, "Under the Net", was selected in 1998 as one of Modern Library's 100 best English-language novels of the 20th century.  In 1987, she was made a Dame Commander of the Order of the British Empire.  Her books include "The Bell" (1958), "A Severed Head" (1961), "The Red and the Green" (1965), "The Nice and the Good" (1968), "The Black Prince" (1973), "Henry and Cato" (1976), "The Sea, the Sea" (1978, Booker Prize), "The Philosopher's Pupil" (1983), "The Good Apprentice" (1985), "The Book and the Brotherhood" (1987), "The Message to the Planet" (1989), and "The Green Knight" (1993).  In 2008, "The Times" ranked Murdoch twelfth on a list of "The 50 greatest British writers since 1945".

Supporting paragraphs: The Black Prince (novel) Iris Murdoch
Answer: Hamlet