The castle control section for Naia server (and probably Chronus) is bugged. I have never heard of any of the clans listed. They are not representative of the current castle owners.
1 month before merge this service stop to be updated. Just before merge it receive again actual data. And after merge - wrong data. Maybe it's auto service and need just to change server ID or something like it. Or maybe it's hand work and person who do it usualy just give up from it.