Uma pista
Olá pessoal!
Encontrei na internet (bom e velho google) algo que pode vir a nos ajudar.
O trecho que segue é encontrado no endereço
http://greenbooks.theonering.net/questions/files/090100.html
Q: Where did Tolkien get the name Gollum from? I'm under the opinion that he got it from Hebrew lore, "a spirit takes the body of a dead man" which is also called Gollum. Since Gollum killed for the Ring, and was never himself again, it could be said that he lost himself to the spirit of the Ring. Taken over similarly to how a Hebrew Gollum ‘takes over.’ Help me out if you can.
–Galahad
A: Tolkien would certainly have known of the Jewish legend of the "Golem"–a man artificially created by cabalistic rites, but the character of Gollum first appeared in The Hobbit (1937), and in the first edition of The Hobbit, Gollum is still a sorry character, but the depth of his character (and his backstory, with his killing of Déagol) is undeveloped, and he is by no means as evil a character as he became in The Lord of the Rings. (In the first edition text of The Hobbit, Gollum even shows Bilbo the way out from under the mountain. This version can be read in the notes at the rear of The Annotated Hobbit.) I’d say that the explanation Tolkien himself gives in The Hobbit is probably near the truth: "And when he said gollum he made a horrible swallowing noise in his throat. That is how he got his name." And when you listen to the recording of Tolkien reading the Gollum chapter of The Hobbit, and you hear the sort of gurgling "Gollum" noise he makes, you can believe him.
Another possibility is suggested in The Annotated Hobbit: "Constance B. Hieatt has noted that ‘Old Norse gull/goll, means "gold, treasure, something precious’" and can also mean "ring," a point which may have occurred to Tolkien." (The Annotated Hobbit, p. 83.)
–Turgon
Espero que seja útil