Lind did not sit still after learning Ethry had been taken. While he did not know why someone had taken her, the fact other dragons had done so told him all he needed to know.
Anyone that defies a True Lord is an enemy of the race. Lind could not arbitrarily alienate an entire Clan without a damned good reason even with his Authority, but there had been those in the past that had.
The records of most True Lords was spotty at best after the Fiend Cataclysm as it had come to be called. All those generations of cultivators lost or record halls sacrificed to hide behind the Law Bindings that were too expensive to include.
The Endless Peaks had not been a total loss but there were massive gaps either by intent or accident that was impossible to tell.
Banished beast clans from any True Lord, however, were one of the few kinds of records retained as it usually was a heinous crime to cause a whole Clan to fall.