Arnuwanda I
Arnuwanda I was a Hittite great king during the early 14th century BC, ruling in c. 1390–1380/1370 BC.
Origins
Arnuwanda's parents are unknown. Because both Arnuwanda and his wife, Queen Ašmu-Nikkal, are described on their respective seals as the children of Tudḫaliya II, this was long interpreted as a marriage between siblings. This, however, was clearly forbidden by Hittite custom and law, and it is now generally agreed that while Ašmu-Nikkal was indeed the daughter of Tudḫaliya II, Arnuwanda was only his son-in-law and possibly adoptive son, as the daughter's antiyant husband, an acceptable heir in the absence of a son.Association on the throne with Tudḫaliya II
Arnuwanda I began his reign in association with his father-in-law and predecessor, Tudḫaliya II, perhaps for as many as a dozen years or so. The simultaneous attestation of both men as great king indicates an association on the throne, something unusual in Hittite and Mesopotamian practice. Arnuwanda collaborated with his father-in-law in the Hittite campaigns against Arzawa in western Anatolia. The two kings defeated Kupanta-Kurunta of Arzawa on one or two occasions, the second time rescuing their recalcitrant vassal Madduwatta, who had attacked Arzawa on his own. The Hittites, led by the general Kišnapili, subsequently saved Madduwatta again, this time from an attack by Attaršiya of Aḫḫiya. Madduwatta subsequently betrayed Kišnapili’s movements to the enemy, causing the ambushing and destruction of the Hittite forces, but somehow avoided punishment.Sole reign
Western border - the Problems with Madduwatta
When Tudḫaliya II died and Arnuwanda I became sole king, he continued to face the problems caused by the machinations of Madduwatta. The latter undertook hostile actions in the regions of Šallapa and Pittaša and made an alliance with his erstwhile enemy Kupanta-Kurunta of Arzawa, whom he offered his daughter as wife; nevertheless, Madduwatta portrayed this as a ploy against Kupanta-Kurunta, while protesting his loyalty to Arnuwanda. Madduwatta attacked the rebellious land of Ḫapalla, ostensibly on behalf of the Hittite monarch, but followed his own interests in annexing it, and in intervening farther afield to the south, in the Lukka lands and as far as Alašiya. The last conquest was possibly undertaken in cooperation with another old enemy, Attaršiya of Aḫḫiya, and again elicited protest from Arnuwanda. The Hittite monarch reclaimed Ḫapalla, but further developments with Madduwatta and Kupanta-Kurunta remain unclear.The latter’s possible successor Uḫḫa-zalma concluded a treaty with Arnuwanda. Later, King Tarḫunt-aradu of Arzawa would expand at Hittite expense and correspond with the Egyptian pharaoh Amenhotep III as a fellow great king.