The future queen of Burma was born Princess Thakin Gyi in Toungoo to King Mingyi Nyo and Khin Nwe, Princess of Mobye. Commonly known as Khin Gyi, the princess was likely half-Shan, a product of the system of marriage alliances among the small kingdoms that dominated Burma at the time. Her maternal grandfather was the sawbwa of the Shan state of Mobye, which was a tributary of the Shan state of Thibaw. Indeed, Thibaw in turn was a tributary and the only reliable ally of Ava, whose authority Mingyi Nyo had spurned in 1510. When she reached teenage, the princess became romantically involved with a commoner, one Ye Htut, who was a close confidant and adviser of her brother the king. Circa April 1534, their affair was discovered, which under Burmese law constituted an act of treason. Some suggested to Ye Htut that he should mutiny. He refused and submitted to arrest, saying that although it was no crime to for a young manto love a young woman, it was an unpardonable crime for a soldier to break his oath of allegiance. Tabinshwehti deliberated at length with his ministers, and finally came to the conclusion that Ye Htut should be given his sister in marriage, and a princely title of Kyawhtin Nawrahta. With this decision, Tabinshwehti won the loyalty of his brother-in-law "without parallel in Burmese history". Ye Htut later received the title Bayinnaung.
Chief queen
Atula Thiri bore Bayinnaung a daughter and a son, early in their marriage 1534–1535. She saw her husband only a few times a year as Bayinnaung and Tabinshwehti were always away on their military campaigns: Lower Burma, Prome and Pagan, Arakan, and Siam. Indeed, her only son Nanda, then only 12, went on the 1548–1549 Siamese campaign alongside his father and uncle. Her accession as the chief queen of Burma was not a smooth one. When her brother the king was assassinated by one of his close advisers in April 1550, her husband was on a campaign to hunt down the rebels in the Irrawaddy delta. When she received the news by messenger at Pegu, she urgently forwarded the message to her husband on campaign at Dala. She immediately left Pegu, which had been taken over by rival claimants to the throne, with her two children for Dala. Atula Thiri became the chief queen on 11 January 1551 when Bayinnaung was proclaimed king at his native city of Toungoo. At Bayinnaung's coronation ceremony on 12 January 1554, she sat alongside the king, taking the title of Agga Mahethi. Next year, their only daughter, elder sister of Nanda, was married off to Thado Minsaw of Ava, the youngest half-brother of Bayinnaung, in the tradition of Burmese royalty. Also in 1555, Bayinnaung sent rich presents to the Temple of the Tooth at Kandy in Ceylon, and bought land there to keep lights continually burning at the shrine. The craftsmen he sent beautified the temple. He also sent brooms made out of his hair and Atula's to sweep the temple. The queen died on 15 June 1568 at Pegu while her husband and her son were preparing for their next campaign in Siam. The Burmese chronicles uncharacteristically report that the king was extremely shaken and saddened by the death of his first love.
