Wishing to remain faithful to Suriothai, Prince Tien entered a monastery to avoid the advances of Si Sudachan, the Queen Mother.

[2] Upon hearing of the Burmese invasion, Maha Chakkraphat mobilized his kingdom, then gathered his forces at Suphanburi, a town just west of Ayutthaya.

[4] The King of Burma then continued his march eastward, capturing the villages of Ban Thuan, Kaphan Tru and Chorakhe Sam Phan.

[5] The Burmese continued their advance and captured the ancient town of Uthong as well as the villages of Don Rakhang and Nong Sarai and closed on Suphanburi.

Accompanying him were his Chief Queen, Sri Suriyothai, and one of their young daughters, Princess Boromdhilok, the two riding together on a smaller war elephant.

Both royal ladies were dressed in male military attire (helmet and armour), with the queen wearing the uniform of an Uparaja.

Fearing for the life of her husband, Queen Sri Suriyothai charged ahead to put her elephant between the king and the viceroy, thereby blocking his pursuit.

[6][8] The viceroy then engaged the queen in single combat, fatally cleaving her from shoulder to heart with his halberd, also mortally wounding her daughter.