Minye Thihathu II of Toungoo (, ; 6 August 1550 – 11 August 1609) was king of the breakaway kingdom of Toungoo (Taungoo) from 1597 to 1609. His kingdom was one of several small states that emerged following the collapse of Toungoo Empire. He is best known in Burmese history for his role in the sack of Pegu (Bago) in 1599 that ended the Toungoo Empire.

He was viceroy of Toungoo from 1584 to 1597 during the reign of his first cousin King Nanda. After breaking away, he entered into an alliance with King Raza II of Arakan, and they captured Pegu in December 1599. The allies thoroughly looted the city before burning it down two months later. They also drove back a Siamese invasion, and agreed to jointly administer Lower Burma outside of Siamese-controlled Martaban (Mottama). But they lost control of Lower Burma in 1603 when the Portuguese governor of Syriam (Thanlyin) in the service of Arakan switched sides to Portuguese Goa. The allies' attempt to regain Syriam in 1603–04 failed.

He spent his last years rebuilding the city of Toungoo and other war ravaged regions around his kingdom. But he also saw his kingdom increasingly boxed in by the Portuguese from the south and Ava (Inwa) from the north. He died a year before Ava took over Toungoo.

Background Minye Thihathu was the eldest child of Viceroy Minkhaung II of Toungoo and his chief consort Laygyun Mibaya, and was born in Toungoo (Taungoo) c. 6 August 1550.Inferred from chronicle reporting, his birth date was one of the following: 30 July 1550 (Full moon of Wagaung 912 ME), 6 August 1550 (7th waning of Wagaung 912), or 13 August 1550 (14th waning of Wagaung 912). Chronicles (Maha Yazawin Vol. 3 2006: 108) and (Hmannan Vol. 3 2003: 114) say that he commissioned a new palace at age 52 years and 3 months (3 months into 53rd year), and occupied the new palace at 52 years and 7 months (7 months into 53rd year). According to (Maha Yazawin Vol. 3 2006: 104), he commissioned a new palace at his coronation ceremony on 8th waxing of Nadaw 964 ME (21 November 1602) and entered the new palace on 10th waxing of Late Tagu 964 ME (21 March 1603). It means he was born on or after 11th waxing of Wagaung 912 (24 July 1550) and on or before 8th waxing of Tawthalin 912 ME (19 August 1550). But since he was a Wednesday born, he was born on 30 July, 6 August or 13 August 1550. His father was a half brother of King Bayinnaung of the Toungoo dynasty. His mother was a daughter of King Bayin Htwe of Prome (Pyay), and great-granddaughter of King Narapati of Ava.Maha Yazawin Vol. 3 2006: 83 He was born during his father brief insurrection against Bayinnaung, following the assassination of King Tabinshwehti. He had four full siblings (a brother and three sisters) and a half-sister.

Early career

Governor of Tharrawaddy (c. 1564–74) Although chronicles provide no details on his early life, the young prince apparently made an impression on his uncle the king. When he was about 14, he was appointed governor of Tharrawaddy (Thayawadi), a small town in present-day Bago Region, with the style of Minye Kyawhtin ().Maha Yazawin Vol. 2 2006: 277 In October 1564, the king gave his 14-year-old nephew the command of the 12,000-man Fifth Army for the upcoming Lan Na and Lan Xang campaigns.Maha Yazawin Vol. 2 2006: 276–278 While it was not unusual that a young Burmese prince was asked to go to the front, it was uncommon that the 14-year-old was given such a high position. Five other army commanders of the 64,000-strong invasion force were the king, the crown prince, his father, and his two other uncles, all of whom were at least a generation older, and had plenty of military experience. To be sure, he was there to represent the high king in an army largely consisted of Siamese regiments. In fact, his Siamese "deputies" all had prior military experience.(Maha Yazawin Vol. 2 2006: 268–272): Governors of Phitsanulok, Sukhothai and Sawankhalok initially, briefly fought against Bayinnaung's invasion forces in 1563 before joining them. They participated in Bayinnaung's subsequent capture of Ayutthaya in February 1564.

His army participated in the capture of Vientiane in January 1565, and spent months trekking the Laotian hills in their fruitless pursuit of King Setthathirat of Lan Xang. He had already turned 15 when he arrived back at Pegu (Bago) in October 1565.Maha Yazawin Vol. 2 2006: 289–292 In October 1568, he was again called to lead the 5000-strong Fifth Army, made up of troops from Lan Na and Kengtung, to put down rebellions in southern Siam and Lan Xang.Maha Yazawin Vol. 2 2006: 310 Southern Siam's rebellion was put down in August 1569 but Lan Xang remained at large. Like in 1565, his army participated in the 1569 invasion of Lan Xang.Maha Yazawin Vol. 2 2006: 328–335

At age 20, he was married to his half-cousin Min Khin Saw, daughter of Bayinnaung by Queen Sanda Dewi on 1 May 1571.(Maha Yazawin Vol. 2 2006: 336): Saturday, 7th waxing of Nayon 933 ME = Tuesday, 1 May 1570

Heir-apparent of Toungoo (1574–84) In 1574, he returned to his native Toungoo, and became the heir-apparent there. He participated in two more military campaigns in the remaining years of Bayinnaung. He led an army in the 1575–76 campaign against a rebellion in the northern Shan states of Mohnyin and Mogaung. He was the co-commander-in-chief of the Arakan campaign in 1581. But his armies saw little action as the campaign was called off soon after King Bayinnaung's death in October 1581 by the new king Nanda.

He returned to a deceptively calm country, which then was "probably the largest empire in the history of Southeast Asia"Lieberman 2003: 152 and an "absurdly overextended empire".Lieberman 2003: 154–155 The transfer of power had gone smoothly; all key major vassal rulers, who ruled what until recently used to be sovereign kingdoms, initially pledged allegiance to the new king, while adopting a wait-and-see attitude.Maha Yazawin Vol. 3 2006: 77–78Aung-Thwin & Aung-Thwin 2012: 137 For his part, Nanda did not trust his vassals especially his own kinsmen Minkhaung II of Toungoo and Thado Minsaw of Ava. When Thado Minsaw revolted in 1583–84, Minkhaung sided with Nanda, who suppressed the rebellion in April 1584.Maha Yazawin Vol. 3 2006: 81–82

Viceroy of Toungoo (1584–97)

Nominal vassal Minkhaung's support of Nanda was crucial in his son succeeding him as viceroy. Less than two months after the Ava campaign, in June 1584, Minkhaung died. Nanda agreed to Minye Kyawhtin's accession, granting him the title Minye Thihathu, King of Toungoo, the same style used by their grandfather Mingyi Swe. For his part, Minye Thihathu II pledged loyalty to his half-cousin, and brother-in-law.

However, he and other vassal rulers were only nominally loyal to the high king. They used Nanda's preoccupation with Siam, which revolted in May 1584, to gain greater autonomy for themselves, only contributing nominally to the war effort. In all, Minye Thihathu went to the front only in the 1586–87 invasion of Siam, contributing just two regiments (2000 men). He sent a single regiment each in the 1590–91 and 1592–93 invasions. He provided no support in suppressing the 1590–92 rebellion in Mogaung (present-day Kachin State).Maha Yazawin Vol. 3 2006: 90–92

In defense of Lower Burma (1594–95) The period of relative autonomy ended in 1593. By then, all five invasions of Siam (1584–93) had ended in failure, and Nanda had finally given up on winning back Siam. He now turned his attention to reasserting his authority closer to home. Minye Thihathu had to pay attention because Toungoo was surrounded on three sides by the states ruled by Nanda and his sons (Ava in the north, Prome in the west and Pegu in the south). When Nanda asked him to lead an army to put down a Siam-backed rebellion in Moulmein (Mawlamyaing) in October 1594, he agreed. But his 8,000-man army was badly defeated outside Moulmein by the Siamese army. At Pegu, Minye Thihathu was severely reprimanded by Nanda, before being allowed to return to Toungoo.Maha Yazawin Vol. 3 2006: 95

But he was soon asked for help again by Nanda. In December 1594, a 12,000-strong Siamese army led by King Naresuan laid siege to Pegu.Maha Yazawin Vol. 3 2006: 95–96 Nanda had not expected an invasion of Pegu itself, and in desperation asked Prome, Toungoo and Lan Na for help. Minye Thihathu was in no hurry. Since he could not break the siege on his own in any case, he reinforced his city's defenses while he waited for the troops from Lan Na to arrive. It was only in March that he left with his army alongside Lan Na troops for Pegu. He left his eldest son Natshinnaung in charge of the fortified city.

The combined Toungoo and Lan Na armies broke the four-month-old siege, and drove back the Siamese army on .Maha Yazawin Vol. 3 2006: 96 Meanwhile, Prome forces led by Thado Dhamma Yaza III of Prome, instead of breaking the siege at Pegu, revolted against his father Nanda, and marched to Toungoo in a brazen attempt to consolidate central Burma. The Prome army laid siege to Toungoo for two weeks, and retreated only after Minye Thihathu rushed back with his army.

Break from Pegu By then, everyone was out entirely for himself.Harvey 1925: 182 Prome had taken over western central Burma up to Pakhan in the north. After the close call, Minye Thihathu decided to defend his own turf, and not help Nanda. Other vassals came to the same conclusion. Then in 1597 Nanda ordered that the rulers of Toungoo, Lan Na and Upper Burma send their first born sons to Pegu, essentially to be kept as hostages.Maha Yazawin Vol. 3 2006: 97 They all refused. Minye Thihathu and Nawrahta Minsaw both formally renounced all tributary ties to Nanda.Htin Aung 1967: 132 Others like Nyaungyan of Upper Burma and Vorapita of Lan Xang may not have formally declared independence but they essentially broke away as well.Chronicles say Nyaungyan never formally declared independence but surviving royal orders by Nyaungyan indicate that he did. (Than Tun Vol. 2 1985: 11): Nyaungyan without Nanda's permission declared that Ava would be his capital on 19 April 1597. (Than Tun Vol. 1 1983: 18–19): On 14 November 1598 (1st waning of Tazaungmon 960 ME), Nyaungyan declared the extent of his kingdom as the Toungoo Empire at its peak. (Stuart-Fox 2008: 38): Lan Xang did not officially renounce tributary ties to Burma until 1603.

King of Toungoo (1597–1609)

Conquest of Pegu (1598–99)

Nanda was in a free fall. Over the next year, his power further deteriorated in the two remaining regions he still ruled: the Pegu province and the Irrawaddy delta. Most able bodied men had fled elsewhere.Maha Yazawin Vol. 3 2006: 98 Minye Thihathu eyed Pegu for the city's enormous riches as well as access to maritime trade of Lower Burma. He entered into an alliance with King Raza II of Arakan. The allies agreed to a joint attack on whatever remained of the empire, and share the spoils. He chose Arakan, the farthest kingdom, figuring that after getting their share of the loot, the Arakanese would return home and not be a rival for Lower Burma.