Prestige and the Personal Union game.

[Josar]

I am currently having a wonderful run as the Byzantines. After the Jagellion dynasty spread to me, I then diplomaticly formed PU's with first Poland, then Lithuania. Later France fell under me with only a royal marriage, after their ruler died. I also forced a PU on a strong Nassau, and have spread my dynasty to Brandenburg, and Bohemia.

Now I have Married the 65 year old ruler of a 2 province Loraine with no heir, but here is a what I don't get.

It says Lorraine will fall under me, but we don't have the same dynasty. Now I know prestige (which is currently always moving to 100 thanks to being Byzantium) gives you priority for spreading your dynasty, but does it also effect forming PU's? What influences wether a country will simply get your dynasty on dieing without a heir, or immediately falling under a PU with you instead?

 

[Cancerofthehead]

When a Christian monarchy ruler dies with no heir one of three things can happen:

1) Most commonly, the dynasty of one of thir Royal Marriage partners spreads to the capital
2) The country becomes a PU subject of one of the countries they have a royal marraige with regardless of dynasty
3) Most rarely, they are inherited directly by one of their royal marrainge partners regardless of dynasty

It is based on things like time, who the emperor is, and other stuff, it isn't under your control.

There is a fairly extensive guide on these forums that can give you a better idea but that is the very high level notes.