How to consolidate all the titles of my entire dynasty?

[BetaGun]

Hey guys,

I purchased CKII some days ago, when it was on sale (so I am still trying to figure this game out). Anyways, I started a campaign as the Duke of Aquitaine and managed to matrilineally marry one of my daughters to the third heir of the Duchy of Flanders. Then I assassinated the first two and when the old Duke died, my daughter became Duchess. Since it was a matrilineal marriage, the new heir is now of my dynasty. Meanwhile, the Duke of Aquitaine died and one of his sons became the new Duke. So my question is, how can I make me (the new Duke of A.) the Duke of Flanders? Do I have to kill everyone of my dynasty who is currently in the line of succession in Flanders? Or is there some other way?

Thanks for your answers!

PS. I did a quick search but didn't find anything. Hope this isn't a repost.

 

[doubleskulls]

Simple answer is yes.

If you want to peacefully gather titles together then "elective" allows you to change your heir to close members of your dynasty, and seniority means it goes to the oldest person in the dynasty.

Generally I'll try to marry people who will inherit (or have claims I can press) then the joint heirs get all the titles.

 

[nyah]

It's still helpful to have a dynasty member in power elsewhere in your realm, because he'll be an ally in war.

 

[Duke of Bavaria]

Like skulls said changing your inheritance law to Seniority is maybe the best way to get all those titles under one hand. Succession here often changes between the different branches of your dynasty and because the heir always is rather old, there are a lot of opportunitites to to inherit the titles of another branch.

 

[Olib]

Easiest way is to marry the two families together the next generation so your heir will be both heirs.
Or choose elective for your inheritance laws and vote the heir of the secondary branch of your dynasty to be the heir od the branch you are playing.

I used a combination of these to conquer near enough all of mainland Greece without a single war as the Paleiogolos in my current game.