I made it my own mission to try and find all the possible nicknames that generals can have. So far I've found:
...the lily-livered.
(have your general run away in battle alot)
...the conqueror
(I think you get this if you add a lot of territory to your faction.)
...the butcher
(exterminate populations on a regular basis)
...the lewd
(leaving a general in a backwater province for too long)
...the honest
(Pretty much just leave a general in the capital and they will be honest..I think)
...the cunning.
(I really don't remember how to get this)
...the infantryman
(Use infantry to win a few heroic victories)
...the brave
(win many victories where your general does plenty of killing...I think)
...the great
(win a lot of heoric victories, don't exterminate populations, add lots of territory to faction, use him in battle alot...it truly is 'great' to get this nickname.)
If anyone knows of other ones please reply and tell me how to get them...yeah?