"11th Song"

"Byzantium"
Sella is a water spirit from a poem by someone named William C. Bryant, I think.

Undine is a water spirit as well, from a story by Friedrich de la Motte Fouqué, who can get a soul becoming a human being, but also becomes mortal by that.
You can read a (though not very good) translation of it here - warning: it's quite long!

"Becoming Light"
The Zelem, or Golem (Jewish), refers in medieval Hebrew to a magically created body out of dust or to the spiritual body that differs from the soul and is formed out of the air of Paradise.

As far as I know, Ochema is another word for "God", but I'd certainly like to know which language it is...

"Cherry Lime Rickey"
A Cherry Lime Rickey is an old Southern drink (cite: Todd).

"Dr. Crippen"
Dr. Hawley Harvey Crippen was a dentist from London who poisoned his wife. He was arrested on board of a ship from Liverpool when he attempted to escape to Quebec with his lover, and was hanged on Nov 23, 1910.

"William H. Bonney"
William H. Bonney, aka Billy the Kid, was born on Nov 23 (no, this isn't a misprint, it's really the same date on which Dr Crippen was hanged half a century later!), 1859, in New York. It is said that he committed his first murder at the age of 12 when a man insulted his mother. Later he went west, shot everyone he did not like and became the leader of a group of desperados. A former friend of his named Pat Garrett hunted him and shot him in July, 1881. Until then Billy the Kid had murdered 23 people.

Illuminatus: I think I have found the final solution, there is something about a group of people who managed to intrude the Pentagon's computer and data, and to manipulate it. Which showed that the safest (computer) network of the world can never be safe enough not to be looked through...
Thanks anyway to everyone who tried helping me out!!