Wisutthithewi

Wisutthithewi (; ), or Visuddhidevi, was queen regnant of Lan Na from 1564 to 1578.

Names Visuddhidevi's name is variously romanized as Visuddhidevi, Wisutthi Thewi, and Visuthithewi. While the Chiang Mai Chronicle consistently records her name as Visutthathewi, the Yonok Chronicle prefers Visutthithewi. She also has a number of names across extant historical sources: in the Burmese and Chiang Saen chronicles, she is referred to as Lady Visutthathewi, and is also called Maha Dewi (မဟာဒေဝီ, ) in U Kala's chronicle, Maha Yazawin, and as Ratcha Thewi and Nang Thewi in other sources.

Early life Visuddhidevi's origins are unclear; she may have been a daughter of Ket, King of Lan Na, or Princess Ton Kham, the youngest daughter of Chettharat. Pensupa Sukkata, a historian, said that she may have been a consort of Kaew and queen mother of her predecessor Mae Ku.

Reign The reign of her predecessor, Mae Ku, saw Lan Na transition into a vassal state of the Toungoo empire. In 1564, she was installed as queen regnant by Bayinnaung, in response to Mekuti's refusal to join Bayinnaung's military campaign against Ayutthaya, which was seen by Bayinnaung as an act of rebellion.

Throughout her fourteen-year reign, Lan Na enjoyed political stability, and Wisutthithewi offered tribute to the Toungoo empire, in exchange for political stability in her dominion, However, no other Burmese or Lan Na sources corroborate any marriage between Bayinnaung and Wisutthithewi; moreover, no Chiang Mai princess is listed among Bayinnaung's queens and concubines in these sources.