Should draw your attention to this article on the raven in mythology: http://www.ravenfamily.org/nascakiyetl/obs/rav1.html.
It mentions all sorts of characters and concepts that come up in the Phantacea Mythos including the Morrigan and Badb (Battle Baby) who feature in “Goddess Gambit“.
Unfortunately I didn’t realize that ravens were the “choughs of the Valkyries” when I wrote “Feeling Theocidal” (but that’s only because I’d never heard the word before). As per here I did know they were connected to them, though.
One thing the article doesn’t mention is that Corax (Raven) is the first step for initiates in Roman Mithraism. (Seen the stonework in Ostia Antica haven’t I.) More re Roman Mithraism is here: http://en.wikipedia.org/wiki/Mithraic_mysteries#Degrees_of_initiation
While I knew that the collective noun for crows was murder I didn’t realize it was unkindness for ravens. Then again, other than ravens are much bigger, I’m still not sure how to tell the difference.
I’d like to tell you that Phantacea’s Raven’s Head was deliberately created to connect to all these mythologies, and perhaps she was, but the name came from a Yates & Jackson, Lancaster beer mug that I still have.