Thettawshay Thihapate made his first appearance in the royal chronicles as the governor of Taungdwin, then a vassal state of Pinya, in 1364.
Thihapate had prepared for a long siege since Thado Minbya took Nganwegon (modern Pyinmana), southeast of Taungdwin, earlier in the year.
(The assassination was carried out by Nga Tet Pya, an accomplished thief-turned-commander, who had breached the Taungdwin army's quarters after having scaled the walls at night.)
The rebel governor subsequently agreed to submit to Thado Minbya in exchange for keeping his office at Taungdwin.
[4] It is unclear if he was still alive in 1409/10 when his daughter Shin Myat Hla briefly became a junior queen of Minkhaung for five months, or in 1410 when she was married off to Commander Thado by the king himself.