Trelawney

This is my new pet rock. I found it in the grounds at Woodbrooke,  adopted it and brought it home. I felt a bit of glitter and glamour was called for to celebrate this new beginning.
I showed it to Tony and explained all this.
He said, "So it's name must be Trelawney, then."
Me (puzzled): "Trelawney?"
Tony: "You know - like the Radio 3 presenter, Petroc Trelawney."
So Trelawney it is.