Creating a Duchy?

[unmerged(213423)]

I am the Duke of Provence and I just successfully completed a crusade for Navarra, gaining those three counties. This caused my demesne limit, and I crossed it (Was 1/5, now 11/7) and I would like to fix this. If I create the Duchy of Navarra, will that Duke have me as his liege? I want to retain my dominance over those counties in whichever way possible. So, please, suggest away.

 

[Faulty]

You should release the cities and monasteries as barony level vassals before you give away any other titles, they take tax penalties when you're not a republic or bishopric (respectively)
You do this by clicking the province, then the settlement's picture, then the third little blue button at the top

As for releasing a duchy when you're at that level yourself, you won't keep the other duke as a vassal, he'll become independent (still can be useful when he's your heir since you'll get it back eventually). If you took the Kingdom of Navarre, you'll keep the duke as a vassal.

 

[Kimberly]

What you can do is hand the three counties of province out to three separate counts, who are your vassals. Because none of them has more than 50% of the duchy, none of them can create the title and thus gain independence. You can create the Duchy of Navarra for yourself and keep it yourself, too, without actually holding any land in Navarra.

 

[Alyiakal]

As Faulty said, get those bishoprics and cities out of your demesne before considering ridding yourself of territory.

Also, if you crusaded for Navarra, you should now be the King of Navarra (unless someone else already holds that title, in which case you'll want to usurp). Even if it was just a Holy War for the duchy of Navarra, you should be able to create the kingdom, as you hold all the counties.

 

[Faulty]

Oh one other neat trick you should do is to save creating the baronies until after you've handed out the counties, that way the baronies are direct vassals of the crown rather than of the new count and you can either get more taxes/troops out of them or transfer them back to their de jure count for a 20 point opinion boost (I normally save these up for when I have a new ruler so I can stabilise the realm by buying loyalty)