Medieval 2: Total War Message Board  

i know that when i first came here this is what i was looking for, so I assume a bunch of other people might want this too. Not only does it list the unit ID names of all the units, but it also lists all possible traits & ancillaries for generals, spies, princesses, merchants, assassins, diplomats, etc etc AAAAANND for the traits and ancillaries 95% of the time it defines exactly what they do (ie +1 chivalry -1 loyalty %30 trade boost)... even for the useless ones. enjoy!

spreadsheets.google.com/pub?key=pLXdtGrh40zDPB4nIHQbfRQ&gid=2

stumbled across this too, not quite as easy to read but it goes more in-depth with the traits (stats for each level, in-game name of trait)

www.gamefaqs.com/computer/doswin/file/931592/50116