¿How can I create the aragonese culture?

[Sir_Poroto]

Long story short; I`m a viking started in denmark, made a varangian conquest and now I´m the duke of Barcelona on my way to take the decision to form the kingdom of Aragon. My character and dynasty is of Norse cultre and Astartu religion, and I want to be Aragonese by the time I form the kingdom, but there are no aragonese counties in which I could move my capital to then change my culture via "embrace local customs" decision. ¿Am I screwed or the culture will spawn right after I form he kingdom of Aragon?

[Eilif]

If there is no county left at all with Aragon culture you are screwed, as you probably wont find any people with Aragon culture. But if you can find one person with that culture and recruit him/her to your court trough marriage or invitation, the chance of culture can be done. You set that peson as our heirs ward with task to let your children embrace the wards culture. You might also get the embrace spouse culture if you marry an Aragonese.

[Zsrai]

In 867 sometimes the culture barely forms, only getting 1 county that is just culture swapped later to Basque (it's usually under the King of Navarre). I've even seen the event fire and 0 counties swapped. Your best bet for "close enough" is probably to just adopt Catalan if you're already in Barcelona, if there are no courtiers you can invite to do what Eilif suggested.