I'm the King of both Ireland and Wales and Crown Authority is High. I had vassals in Andalusia, but somehow I lost them to Scotland during a succession. I thought, isn't High Crown Authority supposed to prevent titles from leaving the realm through succession? So what I realised is that the succession laws of my vassals in Andalusia was under the de jure crown laws of a Muslim ruler who held the title of Andalusia, despite them being my vassals.

I'm having similar problems in Wales now where the successions are not going how I expect them to because they're not operating under the supposed Crown Laws of my realm. I'm in the process of invading England now so I can create the Kingdom of England, but now I'm wondering what can of worms I'm opening.

Does changing succession laws simply not effect vassals at all? I'm under the impression that all my titles will go to my heir, but do I have to worry about the Kingdom of Wales (or the future Kingdom of England) going to someone else because of succession laws for those de jure kingdoms that I can't control? If I later change to elective, will only my Irish titles go to my elected heir and the rest will go to my first-born heir?

Can I only set the crown laws for my primary title, or can I set the crown laws in the rest of my realm and titles?

  • When you open the laws interface, do you see a coat of arms for each of your king titles? Commented Apr 25, 2013 at 13:26
  • @Kurtzhals Yes. I eventually figured out that I can find out the succession laws of titles that way, but I still can't figure out how whether changing my crown laws changes all of them, or just my primary title. Commented Apr 25, 2013 at 16:19
  • @AaronKurtzhals I apparently failed my Reading Comprehension check when reading your comment, because I realise now I thought you meant in my character portrait, but you clearly said in the Laws interface. My bad! Commented Apr 30, 2013 at 3:49

2 Answers 2


Succession laws for multiple kingdoms (and no emperor title)
(For your example where you are the King of Ireland and Wales)

  1. King of Ireland and your lower titles that are de jure part of Ireland are governed by the succession laws for "King of Ireland".
  2. King of Wales and your lower titles that are de jure part of Wales are governed by the succession laws for "King of Wales".
  3. [Duke and lower] titles that are not de jure part of any of your King titles are governed by the succession laws for your primary title

Changing a succession law
If you changed the succession law for King of Ireland, and King of Ireland is your primary title, all of your de jure Irish titles and titles outside any of your de jure kingdoms (#1 and #3 above) will be governed by the new succession law.

You would need to change King of Wales separately. (In the law interface, click on the coat of arms for Wales.)

Succession laws for titles held by vassals
Your vassals have their own separate laws for succession which could be totally different from yours. For example, you have have agnatic primogeniture as your kingdom succession law, and your vassal duke could have agnatic-cognatic gavelkind as his succession law.

  • And when I change my succession laws, only my primary title's laws change, or do the laws of my other titles change too? Commented Apr 25, 2013 at 17:47
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    "You would need to change King of Wales separately." Could you elaborate on that? It's not obvious how to change the Welsh crown laws separately. Commented Apr 26, 2013 at 4:41
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    @SevenSidedDie In the law interface, click on the coat of arms for Wales Commented Apr 29, 2013 at 14:35
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    Oh, oh wow. I can't test this now, but that is exactly what I was hoping for and fairly convinced didn't exist in the UI! I'll check this and confirm when I get home. Commented Apr 29, 2013 at 17:24
  • Exactly right. I completely missed that there was even another coat of arms in the Laws interface. Thank you, and enjoy your checkmark! Commented Apr 30, 2013 at 3:47

Crown Laws are governed not just by Crown Authority but also by de jure Kingdoms. Vassals that are in another de jure kingdom get their crown laws from that kingdom, not from you. This can be remedied via assimilation but this has some specific conditions, namely:

  • The entire duchy is within the realm of the king.
  • The king does not hold the crown of the current de jure kingdom to which the duchy belongs.
  • The ducal title either does not exist or is held by a vassal of the king.

After a year, you begin to see the duchy shaded as your kingdom. Then you can check to see how long it will take to fully assimilate that duchy by hovering the cursor over said duchy.

If you are an emperor, you can assimilate whole kingdoms in the same fashion.

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