I have just become the Petty King of Lanister, with three counties to my name but a Demense size of only two.
I have three sons and have opted for Elective Succession. As the only Duke under myself, I get the sole vote. I've opted for my second son, who has super high diplomacy skills and good traits, to succeed me. My youngest is high in Intrigue but also Content (So he's basically Spymaster For Life). My eldest is a Envious, Greedy Amaeturish Plotter with high Martial Ability (Yeah, I'm not sure how he got that either) whose current ambition is getting a Title.
My question here is if I grant him...say the County of Osmond, will he become independent or still part of my Petty Kingdom? Also what effects would having a too large demense have for my heir when he inherits?
The Norse are crawling all over Ireland right now, and I really don't want to break up this party when I've finally gotten the general strength to start beating them back.