From Dragon Eye Atlas
Kydonticia used to be much larger and Eliri Pe used to be its capital. However, much of its former lands were taken by either Miniasia or Tasen when it was split up following the defeat and destruction of its noble ruling house in 31 BV.
These days, it is a poor region consisting mostly of villages nobody considered worth taking until Ephegeum simply announced control. As Ephegeum City is far away, much of Kydonticia today is controlled mostly on paper.