we wonders, precious, we wonders *gollum*

[Luthien_ Tinuviel]

As far as I can remember, the Golem legend is completely fictitious and relatively recent, and the animation of an artificial creature is attributed to a Rabbi from Prague, CZ. I as well have my doubts that Tolkien would have needed to be inspired by that to name one of his characters after a simple guttural sound.

As do I. I find it doubtful that he had even heard of the Golem... and you're completely correct, Sharkû (I used to live in Prague). I think it just originates from the sound, and nothing more.