Raising the authority of your king?

[Cheetah]

Anyone has any tips how to raise the authority of the king?

I assume that a succesful crusade led by the king would help, but other then this? Diplomacy? Conquest? Beating up the rebels?

[TinCow]

I've found the thing that works best is fighting. In particular, get your King's bodyguard into the thick of it for a good period in each battle. He will get a good amount of authority from both the scarred line of traits and the brave line of traits.

[Whacker]

Taking a quick dive into export_descr_character_traits, I see the following:

Disciplinarian Trait
Brave Trait
Energetic Trait
Rhetoric Trait (lvl 3 up from lvl 2 decreases from +2 to -1)
PoliticalSkill Trait
RabbleRouser Trait
VictorVirtue Trait
DeceiverVirtue Trait
Authoritarian Trait
BattleScarred Trait
Handsome Trait
Pragmatic Trait
Prim
BattleDread
BattleChivalry
StrategyDread
StrategyChivalry
FactionKiller
GoodDiplomacy
TourneyKnight
HorseRacer

and so on.... Sorry I'm tired. Some of these come with negative other traits as well, but at a glance many of these can be done through battle. It'd seem that TinCow's advice is best. I didn't look at any of the triggers but I am pretty sure most of the good ones are battle/victory related.

Good luck!

[Sir Moody]

i use the good ole assassin traits to build my kings stats - he gets a nice amount of dread (good for making your enemies run) and some authority (he also will have a good chance of picking up the deciever traits and get some more that way)

all you need to do is build plenty of assassins and use them.... use them a lot - there are areas on my map where there are no agents at all - my assassins purged them all

[FactionHeir]

Using a diplomat every turn (for a successful negotiation, not gifting), fighting, using assassins/spies, staying in towns with racing tracks/tourneys, using up all movement points, releasing or executing prisoners (not randoming), exterminating cities.

[Slaists]

Using assassins/spies works the best for me.