Marriage between step siblings

[Rein]

I was reading Nero's life and found out that Nero was adopted by Claudius and betrothed to his daughter as well
Can this be done in ck2 as well or will the mechanic prevent this

[Exothermically Eclectic]

Since my current game is as a Zoroastrian Khan, I feel I am obliged to point out that step-sibling marriage is just settling (mind the loonies).
It'll work fine, though, the game doesn't consider them related unless they're half-siblings. It probably should for historical accuracy, but... eh.

[Unpringaosingracia]

Marriage between step siblings can be done. Not even close to incest by CK2 standards. Actually, the concept of "step-sibling" does not exist in CK2, so as long as no biological ties exist, the marriege is possible. And with some religions/cultures incestuous marriages are possible.

Adopting a character is a completely different issue, and not possible if I recall correctly.

[Rein]

I know adopting isn't possible, thou it would be nice but over power if used every time to get the perfect heir

I thought they would included a step siblings title in a dynasty game but oh well

Thank for answering!

[Weizen1988]

Im not super knowledgeable about medieval marriage rules, but im pretty sure there was no such thing as step siblings, there would only be a dead persons children and his unfaithful widow who remarried instead of going off to a convent or something, or if the male was the survivor, they are all just his children.

[kaiyl_kariashi]

Unless adopted you were part of the dynasty that the marriage officially made the person part of.

If you married into a family, you were considered part of it, which is why Hamlet calls Claudius's marriage to his father's wife incestuous. Because she was his sister by law and would remain so until removed by official divorce. (it was also possible for a step-sibling to carry on the new family dynasty if they were officially named part of it via adoption by their new father or some of sufficient family authority to make that claim, though their claims tended to be weaker than those with blood claims, though they could sometimes gender laws depending have a higher claim than a blood relative that was female or via a female line).

This was eventually redefined as only being incestous if they shared close common blood, though the exact definition of how close varied from time and place.


they could implement adoption as a mechanic as a sort of Reverse Born in the Purple.

They become part of the dynasty but their claims will be forever weaker than a blooded member of the dynasty (they will always be under any other eligible heir of the current tier of succession) and a -1 diplomacy and -10 to all dynasty for being not of the ruling blood, though their children will as they're born into the dynasty.

It's also possible to retro-actively declare a legitimate child a bastard by divorcing their parent and disinheirting them. Basically converting them into a Legitimized Bastard (Called Delegitimized Bastard) except that they only inheirt if there are no other valid heirs but will carry on the family dynasty.

[Rein]

That would be cool if they could implement a adoption mechanic into this game for earlier eras say like anicent rome

That would be like the 'Born in the purple' mechanic where the disinherited child from the divorced parent is still part of the dynasty but not recognize as the true dynasty blood
But then does that mean the delegitimized child decided to have children are still part of the dynasty or are they converted to their parent dynasty?