Batom Reachea III (, born Ang Nan; 1654–1691) was a

Cambodia Cambodia, officially the Kingdom of Cambodia, is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. It is bordered by Thailand to the northwest, Laos to the north, and Vietnam to the east, and has a coastline ...

n vice king (

uparaja Uparaja is a noble title reserved for the viceroy in India and the Buddhist dynasties in Burma, Cambodia, Laos and Thailand, as well as some of their minor tributary kingdoms. It is ultimately from Sanskrit उपराज ''upa- rāja'' equivalent ...

) from 1682 to 1689. Ang Nan was the grandson of vice king Outey. In 1674, with the help of the

Ayutthaya Kingdom The Ayutthaya Kingdom or the Empire of Ayutthaya was a Thai people, Thai kingdom that existed in Southeast Asia from 1351 to 1767, centered around the city of Phra Nakhon Si Ayutthaya (city), Ayutthaya, in Siam, or present-day Thailand. Europe ...

, Preah Keo II drove him out. Ang Nan fled to Thái Khang (present day Khánh Hòa Province of Vietnam), and sought help from Vietnamese

Nguyễn lord Nguyễn (阮) (sometimes abbreviated as Ng̃) is the most common surname of the Vietnamese people. Outside of Vietnam, the surname is commonly rendered without diacritics as ''Nguyen''. By some estimates 30 to 39 percent of Vietnamese peopl ...

. The Vietnamese army under

Nguyễn Dương Lâm Nguyễn (阮) (sometimes abbreviated as Ng̃) is the most common surname of the Vietnamese people. Outside of Vietnam, the surname is commonly rendered without diacritics as ''Nguyen''. By some estimates 30 to 39 percent of Vietnamese peopl ...

(阮楊林) and Nguyễn Đình Phái (阮廷派) invaded Cambodia, captured Prey Nokor (

Saigon Ho Chi Minh City (HCMC) ('','' TP.HCM; ), commonly known as Saigon (; ), is the most populous city in Vietnam with a population of around 14 million in 2025. The city's geography is defined by rivers and canals, of which the largest is Saigo ...

), then attacked

Phnom Penh Phnom Penh is the Capital city, capital and List of cities and towns in Cambodia, most populous city of Cambodia. It has been the national capital since 1865 and has grown to become the nation's primate city and its political, economic, industr ...

. Preah Keo II retreated into the forest and Ang Nan was crowned the vice king (

) by the Vietnamese. Ang Nan occupied Prey Nokor, while king Chey Chettha IV occupied

Longvek Longvek or Lavek (, or , ; ) was a city in Cambodia. It was the second capital city during the Cambodia's Post-Angkor period which began after the Angkor era. The city was known to early European traders as "Cambodia". The city used to serve as ...

. Both of them paid tribute to Nguyễn lord every year.''

Việt Nam sử lược ( vi-hantu, 越南史略, , lit. "Outline History of Vietnam"), was the first history text published in the Vietnamese language and the Vietnamese alphabet. It was compiled by Vietnamese historian Trần Trọng Kim. It covered the period from ...

'', Quyển 2, Tự chủ thời đại, Chương 6 However, Ang Nan wanted to overthrow Chey Chettha IV. In 1682, he recruited refugees from

Ming China The Ming dynasty, officially the Great Ming, was an Dynasties of China, imperial dynasty of China that ruled from 1368 to 1644, following the collapse of the Mongol Empire, Mongol-led Yuan dynasty. The Ming was the last imperial dynasty of ...

who had settled in Cambodia with Vietnamese immigrants, resumed fighting against Chey Chettha IV. In response, Kau Kan (Bassac, present day

Sóc Trăng Sóc Trăng (; ) is a city in Vietnam. It is the capital of Sóc Trăng Province. It was upgraded from a town (thị xã) to a city following decree 22/2007/NĐ-CP on 8 February 2007. History During the French colonial period, on December 20 ...

) and Preah Trapeang (

Trà Vinh Trà Vinh City ( ) is the capital city of Trà Vinh province in Southern Vietnam. Etymology Trà Vang was an old name used for this area, a hinterland with a sparse population. In 1825, the area of Trà Vinh was established by King Minh Mạng ...

) were ceded to these Chinese adventures. In 1689, with the help of the Nguyễn lord, he made his last attempt to overthrow Chey Chettha IV. He died in Srey Santhor.

References

* Phoeun Mak, Dharma Po. « La deuxième intervention militaire vietnamienne au Cambodge (1673-1679) » dans: ''

Bulletin de l'École française d'Extrême-Orient The French School of the Far East (, ; also translated as The French School of Asian StudiesPreferred translation by EFEO staff. SeEFEO official website), abbreviated EFEO, is an associated college of PSL University dedicated to the study of ...

''. Tome 77, 1988. p. 229-262. * Phoen Mak, Dharma Po. « La troisième intervention vietnamienne au Cambodge (1679-1688) » Dans: ''

''. Tome 92, 2005. p. 339-381. * A. Dauphin-Meunier ''Histoire du Cambodge'' P.U.F Paris 1968. {{Monarchs of Cambodia 1654 births 1691 deaths 17th-century Cambodian monarchs Monarchs who abdicated