Mingyi Nyo
Mingyi Nyo (; also spelled Minkyi-nyo; ; 1459–1530) was the founder of the Toungoo dynasty of Burma (Myanmar). Under his 45-year leadership (1485–1530), Toungoo (Taungoo), grew from a remote backwater vassal state of Ava Kingdom to a small but stable independent kingdom. In 1510, he declared Toungoo's independence from its nominal overlord Ava. He skillfully kept his small kingdom out of the chaotic warfare plaguing Upper Burma. Toungoo's stability continued to attract refugees from Ava fleeing the repeated raids of Ava by the Confederation of Shan States (1490s–1527). Nyo left a stable, confident kingdom that enabled his successor Tabinshwehti to contemplate taking on larger kingdoms on his way to founding the Toungoo Empire. Early life Mingyi Nyo was born to Maha Thinkhaya and Min Hla Nyet. His father was a descendant of Kyawswa I of Pinya, who himself was a descendant of kings Narathihapate of Bagan and Thihathu of Pinya. His mother was a daughter of Viceroy Sithu Kyawhtin of Toungoo, a descendant of King Swa Saw Ke. Nyo was most likely born in Ava (Inwa) as his maternal grandfather Sithu Kyawhtin did not become viceroy until 1470, and prior to 1470 served at King Thihathura I's court at Ava. He was born in 1459. He was likely about eleven or twelve years old when his entire family moved to Toungoo with Sithu Kyawhtin's appointment as viceroy. After Sithu Kyawhtin's death in 1481, his eldest son Min Sithu inherited the viceroyship. (The viceroyships in that era were hereditary, and were a primary cause of endemic rebellions that plagued Ava. The Restored Toungoo kings (1599–1752) would later eliminate the hereditary rights of viceroys.) Nyo wanted to marry his first cousin, Soe Min Hteik-Tin. But because his uncle Min Sithu repeatedly rejected Nyo's numerous requests, he murdered his uncle, took his cousin as wife. He seized power in April 1485. Reign After assassinating his uncle and seizing the viceroyship, Nyo sent a present of two young elephants to King Minkhaung II of Ava. In normal times, killing a governor was a serious crime. But Minkhaung II was facing a serious rebellion nearer to Ava (by his brother Minye Kyawswa of Yamethin)–Prome farther south had already revolted in 1482–did not want another rebellion. He gave Nyo recognition as governor of Toungoo, and solicited Toungoo's help in the rebellions. Nyo also received recognition from Hanthawaddy and Lan Na, and received propitiatory tribute from the Karenni. Loyal vassal of Ava (1485–1501) Mingyi Nyo, now styled as Thiri Zeya Thura, eagerly assisted Ava in its fight against Yamethin. (His grandfather Sithu Kyawhtin died in 1481 fighting against the Yamethin rebels.) Even with Toungoo's help, the Yamethin rebellion was intractable and remained a stalemate. (It would remain so until Minye Kyawswa's death in August 1500). With Ava chiefly preoccupied by Yamethin, Nyo grew more confident and on 11 November 1491 built a new fortified city called Dwayawaddy (still near Toungoo), at the estuary of the rivers Kabaung and Paunglaung. Nyo soon tested his power by meddling into