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The defeat of the Phimai faction
The Phimai faction was set up by Prince Thepphiphit, a prince of the Ban Phlu Luang dynasty who had been exiled to Ceylon and had come back. After the capital fell he established himself at Phimai. Late in 1768 King Taksin marched against him. The vanguard was led by Phra Ratchawarin (Thong Duang) and Phra Maha Montri (Bunma), two brothers who later became King Rama I and Prince Maha Sura Singhanat, the Front Palace prince.
- 1Stops, numbered as in the list below
- 3Fighting with other forces
- 1–3Several stops close together: tap to zoom in
- ≈ approximate position
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The ≈ sign marks an approximate location. Borders on the map are modern and shown for orientation only. Campaign routes are approximate lines drawn from the chronicles and modern studies, not the exact path taken. Dashed lines are enemy armies.
An Ayutthaya prince at Phimai
Prince Thepphiphit was a son of King Borommakot. He had been exiled to Ceylon because of court politics and returned during the war that ended Ayutthaya. After the fall he established himself at Phimai. As a prince of the old royal line, he was an important political rival to King Taksin.
According to the royal chronicle, the Thonburi army marched through Nakhon Ratchasima and won a battle at Dan Khun Thot. Prince Thepphiphit was captured and executed. This is also the campaign in which the names of Phra Ratchawarin and Phra Maha Montri begin to stand out in the chronicles.
The route in 4 stops
- 1
Thonburi
Places to visit nearby
- Wat Arun ↗Google Maps
- Wongwian Yai, King Taksin monument ↗Google Maps
- Bangkok travel guidesongkran.com
Where to eat nearby
- Restaurants around this stop ↗Google Maps
- 2
Saraburi
Places to visit nearby
No suggestions for this area yet
Where to eat nearby
- Restaurants around this stop ↗Google Maps
- 3
Dan Khun Thot
Fighting (not the Burmese)- Battle
- The battle of Dan Khun Thot
- Against
- The army of the Phimai faction under Prince Thepphiphit; not Burmese troops
- How
- The vanguard, under Phra Ratchawarin (Thong Duang) and Phra Maha Montri (Bunma), went up by way of Dan Khun Thot.
- Outcome
- The Phimai faction was defeated and Prince Thepphiphit was captured.
- Note
- Approximate position.
Places to visit nearby
- Things to do in Nakhon Ratchasimasongkran.com
Where to eat nearby
- Where to eat in Nakhon Ratchasimasongkran.com
- Restaurants around this stop ↗Google Maps
- 4
Phimai
Places to visit nearby
- Phimai Historical Park ↗Google Maps
- Things to do in Nakhon Ratchasimasongkran.com
Where to eat nearby
- Where to eat in Nakhon Ratchasimasongkran.com
- Restaurants around this stop ↗Google Maps
Travel guides for the provinces on this route
Things to do and where to eat in each province, from songkran.com, our sister travel site
- BangkokStop 1Bangkok travel guide →
- Nakhon RatchasimaStop 3, 4Things to do in Nakhon Ratchasima →Where to eat in Nakhon Ratchasima →
Where historians still disagree
- Suki's flight to Phimai: some versions of the chronicles say Suki was spared after Pho Sam Ton and then fled to join Prince Thepphiphit.
Frequently asked questions
Who was Prince Thepphiphit?
A son of King Borommakot, who set up a faction at Phimai after the fall of the capital.
Last updated 13 November 2026