lord_Nelson
Veteran
Seem like those claimants prefer to go from castle to castle, city to city just to wait for you to swear fealty and support their cause (which is very unlikely since player can become rightful king of a new faction). Why can't they go and muster support on their own, gather some troop and seek military aid from a rival faction to help with his or her cause or come to seek us (the player) for support (asking for military aid) in exchange for something . Or at least try to rally the lords of the defeated (his/her) faction to rise up in rebellion (re-establishing the old faction with him or her as the king or queen) against the player (if the player wipe out that faction). Because claimant of a faction simply disappear after the faction was wipe out.
