Thihathura was born in 1431 to Viceroy Narapati of Prome and his chief wife Atula Thiri Maha Dhamma Yaza Dewi, a descendant of Pinya royalty.
[2] Not yet twelve, the young prince was made heir apparent when his father ascended to the Ava throne in January 1442 (Tabodwe 804 ME).
[4] Thihathura did not punish the son, and instead allowed him to marry the girl for whom he had stabbed his grandfather, and gave the towns of Sakut, Salin, Baunglin, Legaing, Myo-htit, Taungta, Mindon, Thayet, Myede, Kanyin, and Myaung.
[6] Toungoo, a remote province in the southeastern part of Ava Kingdom, had a long history of insurrections.
The princes spared the rebellious governor's life, and carried him off to Ava, leaving Sithu Kyawhtin as the head of the troublesome province.
[6] He turned his attention to the Shan states of Mohnyin and Mogaung in the north which had not openly revolted but not explicitly submitted to the new king either.
The envoys brought a broom made of the hair of the king and queen, and its handle studded with gems to sweep the floor of the Temple of the Tooth at Kandy.