What determines if a noble from house X will succeed the throne?

[Your Highness]

As the title says, what determines whether another dynasty succeeds the throne or if a noble will? I have royal marriage with England and they have no heir, I have almost 100 prestige and legitimacy and higher development, they have like 9 prestige and yet a noble from house Rurikovich will succeed the throne why is that?

[Cortez]

I would like to know this too.

But as far I understand to get a dynasty on your throne the ruler of the country must die without heir, then you get the PU.
And about the noble... I think England got an event where you can choose to get a noble or just keep being without heir( not sure if AI can get such events like players do).

[Your Highness]

Perhaps, sounds fair at least.

[One Sun Mirror]

Province development. Check all the nations who have royal marriages with England. Sounds like Muscovy/Russia has a royal marriage with them. You'll need to have more development than they do at the death of the English monarch if you want the new noble to be of your dynasty.

Double check your development vs that of other nations with royal marraiges.

As for prestige, I think you just need to have higher prestige than England does, not necessarily the other claimants.

If you're towards the start of the game (ie. the War of the Roses hasn't fired), the English Lancaster king dying without an heir triggers the disaster and they get a new heir of Lancaster or York dynasty (sometimes followed by a Tudor) rather than any outsider. Something to keep in mind.

[Aeru]

Originally posted by One Sun Mirror:

Province development. Check all the nations who have royal marriages with England. Sounds like Muscovy/Russia has a royal marriage with them. You'll need to have more development than they do at the death of the English monarch if you want the new noble to be of your dynasty.

Double check your development vs that of other nations with royal marraiges.

I actually think, that with the new consort system you have to get the consort married with England. So if you meet all the requirements of more Developement and higher prestige when marrying, they must have a ruler without a consort and your marriage must lead them to have a consort of your dynasty.

If anyone knows more I would be glad to hear.