The Precious was FA'd by Veronica C in '03. It is not the last route on the wall; the one twenty feet to the right up the steep bulge on black good rock is called Red Rooster and is a short/bouldery 12c.
As for the rest of the "dry wall", most of the routes were put up by Kevin Fosburg over many cold and snowy toiling days starting in '01. And yes, there are names to all the routes despite what guides will state.