I've been trying to do a little reading up on Djinn, but most of the information I've come across is from Islam. I am more interested in their role in pre-Islamic mythology, which seems to have been more that of tutelary or protective guardian spirits, much like the Greek daimones (as opposed to Christian or Islamic 'demons').

I'm starting from the basis of this statement in the dreaded Wikipedia: "Inscriptions found in Northwestern Arabia seem to indicate worship of Djinn, or at least their tributory status. For instance, an inscription from Beth Fasi'el near Palmyra pays tribute to the "Ginnaye", the "good and rewarding gods" ( Hoyland: Arabia and the Arabs, 2001,) providing a sharp resemblance to the Latin Genius and Juno: The Guardian Spirits. This reveals the missing link between the Etymology of these two words."

If anyone has any information or speculation on the pre-Islamic nature of Djinn, I would love to hear it! *smiles*