Mursili II
The only datable Manapa-Tarhunta was the one who became undisputed king of Seha River around the time of the death of Arnuwanda II (1322 BCE). This letter further mentions a Kupanta-Kurunta. A treaty between Mursili II (1322-1295 BCE) and a Kupanta-Kurunta, who is king of Mira (Western Asia Minor), survives which mentions this Manapa-Tarhunta as still alive.