Mursili II
Burney ("Historical Dictionary of the Hittites", 2006) and Bryce ("Kingdom of the Hittites", 2005) attribute the Milawata letter to Tudhaliya IV writing to a "later" king of Mira. If so, the letter's references to the events in which Kupanta-Kurunta and Mursili II participated are meant to evoke their dynasties rather than the actual characters, or else parallel events from a later period (which would however remove some of the above arguments for placing the letter at Mira).