Five years into his reign, the armies of
Manipur invaded and plundered the northern Burmese provinces. The Burmese were unable to suppress them. Since the move of capital from
Pegu to Ava by King
Thalun in 1635, Pegu had become the rallying point for the Mon revival and insurgency. The Burmese governors were readily hated due to heavy corrupted taxation. Taking the advantage of weak royal authority after the Manipur invasions, a Burmese governor rebelled and proclaimed himself the King of Pegu in 1740. The
Mons, unwilling to have a Burmese king in Pegu, rioted and murdered the new king. Mahadhammaraza Dipati then installed his uncle as the new governor of Pegu. Yet the Mons were still unsatisfied and went on to kill Burmese officials in Pegu. The king was then enraged at the Mons and ordered a massacre of the Mons at Pegu. The Gwe Shans (the Shans who were taken as captives from their northern homelands to Pegu by King Bayinnaung in the 16th century) took this opportunity to stage their own rebellion. The Shan armies with supports from the Mons took Pegu in 1740. A popular monk of Shan origin was proclaimed
Gwe Min the King of Pegu. As Ava was largely distracted by another Manipur invasion. The Peguan armies invaded
Prome and Ava but failed. They were able to take
Toungoo. Thado Minkhaung, the viceroy of Prome and Mahadhammaraza Dipati’s brother, hurried south and took Syriam but was soon repelled. Prome eventually fell to the Mons in 1745. The Mons tried to take Ava again without success. In 1747,
Binnya Dala was proclaimed the King of Pegu. The two sides were unable to overcome each other until 1751 when the crown prince of Pegu (Binnya Dala’s brother) marched the Peguan armies into Upper Irrawaddy and laid siege on
Sagaing and Ava. Ava fell to the Mons on 22 March 1752 (Wednesday, 8th waxing of Late Tagu 1113 ME) and Maha Dhammaraza Dipati was taken as captive down to Pegu. Mahadhammaraza Dipati had survived for another two years before being executed in 1754 due to a suspected rebellion. ==Descendants==