Charade

Can any of your readers help me to a solution of the following poetical charade, which I believe appeared in the *Times* newspaper a few years back with this heading to it:— "The following piece of mysticism has been sent to us as original, with a request for a solution. The authorship is among the secrets of literature: it is said to have been by Fox, Sheridan, Gregory, Psalmenazar, Lord Byron, and the Wandering Jew. We leave the question to our erudite readers." "I sit on a rock While I'm raising the wind, But the storm once abated, I'm gentle and kind; I see kings at my feet, Who wait but m…