I had thought of Hope, but I'm afraid I still don't see how the clue gets us there! The only barrister's dream i can think of is in The Hunting of the Snark, where they pursue the Snark with Hope, but the barrister doesn't dream about it...
Thanks, Rapparee. I think I committed the cardinal sin of getting stuck in a thought-rut (the Snark), and didn't read enough of the Wikipedia entry on Hope!