He was married to his first cousin Myat Hpone Pyo, who was the youngest daughter of his maternal uncle Saw Shwe Khet, governor of Prome and later Tharrawaddy.
[2] Ba Saw grew up in Ava until 1460 when his father appointed him governor of Tharrawaddy, the southernmost town on the border with the Hanthawaddy Kingdom.
[3] After Thihathura died in 1480, the new king Minkhaung II was greeted by a major rebellion by his brother Minye Kyawswa, the governor of Yamethin.
[4] Thado Minsaw took advantage of the war between his nephews Minkhaung II and Minye Kyawswa in Upper Burma by taking over Prome, and declaring himself independent.
But the Avan army could not take Prome, and retreated after a month due to the fierce bombardment from fire arrows, cannon, and the newly acquired muskets.
Thado Minsaw had three sons and three daughters with his first wife Myat Hpone Pyo, who died in Tharrawaddy before he became king of Prome.