Who are you really supposed to be able to appoint to dukeship?
The options my ruler gets are three margraves from other duchies, a rural lord from another duchy, two woodland lords from other duchies, a mountainous lord from another duchy and a very new noble who hasn't taken an estate yet.
So my question is still, what happens if she appoints a margrave or a lord from another duchy? Will she be able to appoint knights if they give up their estates first?