Saw Lagun Ein

Saw Lagun Ein စောလကွန်းအိန်
Viceroy of Martaban (Mottama)
Reign	May 1541 – May 1550
Predecessor	Saw Binnya
Successor	Smim Htaw
Born	Pegu (Bago)
Died	May 1550? Martaban (Mottama)?
Spouse	Younger sister of King Takayutpi
House	Hanthawaddy
Mother	Paternal aunt of Takayutpi
Religion	Theravada Buddhism

Saw Lagun Ein (Burmese: စောလဂွန်းအိန် [sɔ́ ləɡʊ́ɴ ʔèiɴ]) was viceroy of Martaban (Mottama) from 1541 to 1550. The ethnic Mon viceroy was a top military adviser to King Tabinshwehti and Gen. Bayinnaung of Toungoo Dynasty. He fought alongside them in all their military campaigns from 1540 to 1549. He led the 1547–1548 campaign that retook the Tavoy frontier in the war against Siam (1547–49). He was overthrown by Smim Htaw in the chaos that followed Tabinshwehti's assassination in 1550.

Saw Lagun Ein was of Hanthawaddy royalty, a grandson of King Dhammazedi (r. 1471–1492) as well as a first cousin and brother-in-law of King Takayutpi of Hanthawaddy (r. 1526–1539). His mother was a paternal aunt of Takayutpi and he was married to a younger sister of Takayutpi. He was one of the Hanthawaddy nobles that entered the service of Tabinshwehti after Takayutpi died in exile.

In May 1541, he was appointed viceroy of the province of Martaban (approximately, present-day Mon State) by Tabinshwehti. As a vassal ruler, he not only contributed manpower to the high king's nonstop military campaigns every year between 1541 and 1549 but also led armies in those campaigns. He was one of the three top generals (along with Bayinnaung and Smim Payu) in Toungoo's invasion of Upper Burma in 1543–44. In 1547–48, he successfully led Toungoo forces (4000 naval troops and 8000 land troops), and retook Ye and Tavoy (Dawei) from Siamese forces. He was under the command of Bayinnaung in the 1548–49 invasion of Siam.

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