Prince William’s horoscope shows that he has a mysterious and magical soul because Neptune and Lilith are rising. The Ascendant is the most personal point in any chart, and Neptune here not only gives sensitivity and spirituality, but also makes these personal features hard for us to pin down and understand. According to Astro Databank he is noted for having an occult book collection. Some other aspects and fixed star interpretations do give us greater insight into this secretive nature.
Prince William’s rising star is an highly esoteric and anciently important star called Etamin, the Right Eye of the Dragon. In ancient Egypt it was known as Isis,
“Its rising was visible about 3500 B.C. Through the central passages of the temples of Hathor at Denderah and of Mut at Thebes…at least seven different temples were oriented toward it.” . Now Etamin “passes exactly over the zenith of Greenwich” , so there it is called the Zenith Star. Astrologically, Ebertin says Etamin gives “a liking for solitude. Good mental concentration…Esoteric and philosophical studies.” 
Neptune is on another esoteric star, this one called Aculeus in the sting of the Scorpion. According to Morse, Aculeus, like it’s near neighbor Acumen, gives “very sharp minds and a perception well above average as though, perhaps ‘blind’ to what we see and take for granted, they see what we do not, at levels where eyesight does not reach. Not for nothing has the word Acumen come down to us as a term for a sharp mind.” 
Lilith also conjunct the Ascendant in the Prince William horoscope suggests a darker magical and occult side. At just one minute orb, Sun opposite Lilith is the tightest aspect in the horoscope. As Marina found when studying this aspect, it “can work as a magic wand of a power source… the mind can function magically and show profound genius.” This opposition is bridged by Jupiter, the Sun trine Jupiter gives “a marked interest in philosophy, religion or politics”.
No doubt the tragedy of his mothers death turned him inward in the search of deeper meaning. This terrible pain can be seen in the horoscope with the close conjunction of Venus and Chiron on the agonizing fixed star Algol. This conjunction on this star is very potent, made more-so by being the action point of a Yod aspect pattern to Neptune sextile Pluto. Rosenburg says of Algol, “you will be aware of the depths of suffering that can occur, whether through human depravity or “Acts of God”; and you will not be able to ignore suffering and horror, or brush it aside; your life path will require that you come to terms with that level of experience.” 
The Midheaven represents the calling, and the star here supports the occult theme in Prince William’s chart, Princeps in constellation Bootes. Robson says it “gives a keen studious and profound mind with the ability for research.” Mercury trine Mars gives a quick and sharp intellect, aided by Mercury conjunct the fixed star Alderbaran which Robson says with Mercury gives “prominence through mercurial matters, material gain, and many learned friends.” 
The Part of Fortune not only signifies material success but it is also a spiritual point in the chart relating to the happiness of the soul. Williams Part of Fortune is conjunct the fixed star Polis in the Archer. Morse says this star denotes “someone whose interest and knowledge of things spiritual may be both keen and profound.”  Transiting Pluto has been on Prince William’s Part of Fortune this last year, perhaps intensifying his studies into the occult.
 Star Names, Their Lore and Meaning, Richard Hinckley Allen, 1889, p.208-209.
 The Royal Observatory Greenwich, It’s History and Work, E. Walter Maunder FRAS, Chapter XII.
 Fixed Stars and Their Interpretation, Elsbeth Ebertin, 1928, p.74.
 The Living Stars, Dr. Eric Morse, p.86-87, 94.
 Medusa’s Head, Diana K. Rosenburg.
 Fixed Stars and Constellations in Astrology, Vivian E. Robson, 1923, p.190, 121.