Hullo my people!!!! Here I am with ANOTHER crazy theory of mine, but this one isn't as crazy. It also kinda belongs in the Lodestar Category, but not really, because Calla was from book four.
Ok, so here's my theory, and its not really a theory, more something I just noticed. In book five, at the peace summit, there is a gnome there. His name is (some first name I forgot) the Sower. So this makes me think that the gnomes don't really have last names, but are called their profession. So this made me wonder what Calla would be. Would it be Calla the Singer, or Calla the Gardener, or something else?