PU-Sarruma

PU-Sarruma (PU-LUGAL-ma, mPU-"Šàr-(rù)-ma", possibly representing "Hišmi-Šarruma") is a conjectured pre-Empire king of the Hittites. The conjecture was forwarded by Emil Forrer and is not commonly accepted.
He would have reigned around 1600 BC (short chronology).
Family.
Hišmi-Šarruma would correspond to the grandfather of Hattusili I and the father-in-law of Labarna I and true father of Papahdilmah, mentioned (but not by name) by Hattusili. Hišmi-Šarruma was also a father of Tawannanna.
Virtually nothing is known of PU-Šarruma's life, who is a very shadowy figure. PU-Šarruma's sons had turned against their father, so that, while he was in the city of Šanahwitta, he named his son-in-law Labarna as his successor. However, Papahdilmah still had support among the king's servants and chief officers.