Piyassili

Piyashshili was a Hittite Prince, son of King Shupiluliuma. After Shupiluliuma had made a treaty with Shattiwazza, son of King Tushratta of Hanilgalbat and married his daughter to him, Piyashshili led a Hittite army that put Shattiwazza on the throne of Hanilgalbat. According to Hittite sources, Piyashshili and Shattiwazza crossed the Euphrates at Carchemish, then marched against Irrite, already in Hurrite territory. After having reduced Irrite and burned Harran, they continued east towards Washshunikanni and maybe conquered the capital Taite as well. At that point, an Assyrian army appeared, but seems to have retreated again.

When the Egyptians attacked Quadesh (Kinza), the town was besieged and taken by Shupiluliuma. The people were deported and Piyashshili made governor. Piyashshili fell ill and died before year 9 of Mursili II. After his death, a rebellion broke out in Quadesh and Nuhashshe. After it had been quelled, Piyashshilis son was made king of Quadesh by his uncle Mursili II.