Hadro, archbishop of Tunaya's Brilliant White Church had been watching in secret all along.
Still, saying that he was 'watching in secret' wasn't quite right since the Silver Eagle Duchy was a very small territory and was a part of the Valla Empire on paper. That was the reason it wasn't valued much, which was why the Brilliant White Church didn't station a larger sacred corps here.
After the sacred corps dispatched to Sotimi had been wiped out by the undead orks and he learned about the zombie dragon from the Temple of Glory, Hadro promptly ordered all remaining sacred corps to defend Tunaya.
As such, he didn't pay much attention to the Players who arrived at Tunaya as 'reinforcements personally invited by Angora, heir of the Faust family'.