Hello Guys and Girls!

I found alot of dianium thieves and even took down the leader (I forgot the name) but i do remember bpt was his partner.. He has a sick desert sword weapon and back story. So I am now wondering if you guys know where the other weapons are for the rest of the thieves? Because the book he had on him said this master smith made weapons for all of them. So I am now wondering where and did you guys find the special Nodachi weapon? I found the leader guy in the desert near heft and stout