I just have to remind everyone about great fan-project created by Valvorik (you can find his posts from the Strike to Stun forum and from the FFG forum) about Averland: Averheim Electoral Crisis.
This project features everything, and much more, you need know about the Electorship situation in the Averland. Project also features huge amount of details about the main families, minor nobles, various important characters, organizations, plots, places, map... etc. Main focus in the project is WFRP3, but it can be used with any edition, because it is more background information.
You can find the latest version from Valvorik's dropbox (https://www.dropbox.com/s/6rt5xw1o5m6utku/Averheim%20Electoral%20Crisis.docx)