It was because Perdan was busy fighting Armonia, Caligus and Eponllyn all at once.
Oh. That war. To be fair, Eponllyn did most of the fighting in that war against Perdan. And by fighting, I largely mean being slaughtered, raped, and starved into surrender of half the realm (Ibladesh and Al Arab) after the allies Armonia and Caligus encouraged Eponllyn into the war by offering their support, fought a couple battles with Perdan, and then surrendered to Perdan, without a word to their ally Eponllyn, with barely any loss of land to Perdan on their part. Worthless allies. I do also recall Sirion whooping Westmoor and Westmoorian colonists joining Perdan's Perleone puppet.
