Hi all!
Well, I was right! Turns out that "Abhorsen" *does* come from a Shakespearean play, as I speculated a while back. Here's the proof: http://www.stonesoup.co.nz/talula/archives/003180.html

Also, in case anyone is interested in RPing a la Nix, I'm part of a group of RPers. We're looking for new blood... er, members for our not-yet-begun RP, "The Hanged Man". We're not accepting applications at the moment, but you'll have some time to work on your application! :) We also have an LJ community, and there is a link to it on our website.

Here's the website: http://www.rpg.anylife.net/