A treaty between Mursili and Kupanta-Kurunta of Mira later lists the Astarpa as the border of Kupanta-Kurunta's client region of Kuwaliya.
The annals of Mursili II record that in the 3rd year of his reign, which would be 7 years prior to Mursili's eclipse in 1312 BC, prince Piyama-Kurunta of Arzawa stood against his army at Walma by the river Astarpa.
The king of Arzawa Uhha-Ziti named his son "Gift of the god Kurunta", after a god (or hero) whose name had featured in the names of previous Arzawan kings.