He reinforced his already heavily fortified city of Prome (Pyay), and hired foreign mercenaries.
Although he knew his nominal overlords, the Confederation of Shan States, would assist him, he continued the alliance with King Min Bin of Mrauk U begun by his late brother.
[3] King Tabinshwehti of Toungoo appointed Mingyi Swe, Bayinnaung's father, governor of Prome, restoring its former position of a provincial capital.
Thiri Hpone Htut became a queen of Bayinnaung with the title of Sanda Dewi.
[4] The following is his ancestry as reported in the Hmannan Yazawin chronicle, which in turn referenced contemporary inscriptions.