You can even use cities or temples, if you don't mind having vassals of a different government. Granting a county is the most common, but you can also grant a barony-level title. You must land the claimant before enforcing demands, unless the claimant is of your dynasty or the target title is a de jure vassal of yours. Female claimants can be gained by using a favor to arrange a betrothal/marriage with one of your kinsmen. Young claimants can be invited normally after using a favor to educate them into your religion. Some claimants might be susceptible to invitation by favor, as long as they are not councilors or close relatives of their liege. With Conclave DLC, favors create other opportunities to gain control of claimants. If you capture a child in sieges or sackings, you can educate them into your religion after moving them from a dungeon cell to house arrest, and then release and invite them upon adulthood. The Force Vassalization CB can vassalize an entire small realm. If a claimant resides in a mere county, you can vassalize them with a de jure war, a Buddhist minor holy war, Muslim holy war. It is difficult, but usually possible, to gain claimants on infidel kingdoms. Note that this display does not distinguish between strong and weak claimants, nor does it show characters who will get claims upon the deaths of their parents but do not presently have them. When viewing a title, clicking the 'show claimants' button will display a list of all claim holders, together with an icon indicating whether they will accept an invitation to your court.

Ck2 how to get claims on kingdoms