Theingapati (Burmese: သိင်္ဃပတိ, pronounced [θèiɴga̰pədḭ]; ultimately derived from Sanskrit Siṃhapati;[1] c. late 1270s – 10 May 1299) was heir-apparent of the Pagan Dynasty of Burma (Myanmar) from 1289 to 1297.
The crown prince is known for his mission to Beijing in which he sought and received the Mongol Empire's recognition of his father, Kyawswa, as King of Pagan in March 1297.
[2][3] Theingapati (Singhapati) was born to Princess Saw of Thitmahti and Prince Kyawswa, Viceroy of Dala (modern Twante), during the last days of the Pagan Empire.
His father had been hand-picked by the dowager queen Pwa Saw to succeed his grandfather King Narathihapate, who had been assassinated two years earlier.
The kingdom's most important Kyaukse granary region was controlled by the three brothers of Myinsaing who led the defense of central Irrawaddy valley against the Mongol invaders in 1283–87.
In the following years, Kyawswa became concerned by the brothers' increasingly open consolidation of power in the central Irrawaddy valley.
With the help of the dowager queen Pwa Saw, the brothers lured Kyawswa to attend a monastery dedication ceremony in Myinsaing.
The Yunnan government, which did not have enough spare troops, initially ignored the pleas of Kumara Kassapa, who had somehow escaped the arrest, to intervene.