Đinh Bộ Lĩnh quells the rebellion of the Twelve Warlords and founds the Đại Cồ Việt state: course of events, significance, and layers of legend

Historical background before the Twelve Warlords rose

After Ngô Quyền died in 944, the central government left by the Ngô dynasty gradually disintegrated. Historical sources show that the internal situation of the Ngô dynasty was unstable, and local forces took the opportunity to establish their own rule. Trần Trọng Kim's Việt Nam sử lược notes: after the Ngô dynasty weakened, there was no leader in the country, and the Twelve Warlords fought one another, causing suffering among the people^[2]. The Đại Việt sử ký toàn thư also records the situation clearly: "the country had no ruler, the Twelve Warlords contended, and no one could control anyone else"^[1].

One point about the sources should be noted. Works such as the Đại Việt sử ký toàn thư, Việt Nam sử lược, and Đại Nam quốc sử diễn ca are original texts or historical documents, not modern research. They prove that earlier generations recorded these things, but do not automatically prove that every detail in them is verified historical fact. This is a necessary layering when reading old historical sources.

Who were the Twelve Warlords?

The old histories agree on who the Twelve Warlords were, differing only in order and in a few characters of the titles and place names. The Đại Việt sử ký toàn thư lists: Ngô Xương Xí holding Bình Kiều, Kiểu Công Hãn styled Kiểu Tam Chế holding Phong Châu, Nguyễn Khoan styled Nguyễn Thái Bình holding Tam Đái, Ngô Nhật Khánh styled Ngô Lãm Công holding Đường Lâm, Đỗ Cảnh Thạc styled Đỗ Cảnh Công holding the Đỗ Động River, Lý Khuê styled Lý Lãng Công holding Siêu Loại, Nguyễn Thủ Tiệp styled Nguyễn Lệnh Công holding Tiên Du, Lã Đường styled Lã Tá Công holding Tế Giang, Nguyễn Siêu styled Nguyễn Hữu Công holding Tây Phù Liệt, Kiểu Thuận styled Kiểu Lệnh Công holding Hồi Hồ, Phạm Bạch Hổ styled Phạm Phòng Át holding Đằng Châu, Trần Lãm styled Trần Minh Công holding Bố Hải seaport^[1].

Trần Trọng Kim's Việt Nam sử lược lists the same twelve, with early twentieth-century glosses for the place names, such as Kiểu Thuận holding Hồi Hồ (Cẩm Khê, Sơn Tây) and Phạm Bạch Hổ holding Đằng Châu (Hưng Yên); it writes Lữ Đường, Lý Lang Công and Nguyễn Lịnh Công where the translation of the Toàn thư writes Lã Đường, Lý Lãng Công and Nguyễn Lệnh Công^[2]. The Đại Nam quốc sử diễn ca by Lê Ngô Cát and Phạm Đình Toái names all twelve in lục bát verse: Nguyễn Thủ Tiệp, Ngô Nhật Khánh, Nguyễn Siêu, Ngô Xương Xí, Lữ Đường, Nguyễn Khoan, Phạm Phòng Át, Kiều Tam Chế, Đỗ Cảnh Công, Kiều Thuận, Lý Khuê, Trần Lãm^[3].

The table above follows the Đại Việt sử ký toàn thư^[1]. The place names here are names recorded in the histories, not current administrative place names. Some places such as Hồi Hồ, Đằng Châu, and Bố Hải are no longer used in the administrative system, so the article keeps the names as in the sources with notes where needed.

Who was Đinh Bộ Lĩnh and how do the histories record his origins?

Đinh Bộ Lĩnh was from Hoa Lư động, Đại Hoàng phủ (now in Ninh Bình province). Việt Nam sử lược records that he was the son of Đinh Công Trứ, who held the position of governor of Hoan Châu under Dương Diên Nghệ and King Ngô Quyền; after Đinh Công Trứ died early, Bộ Lĩnh and his mother returned to their homeland, where he often gathered with herdsmen children, made them fold their arms to form a palanquin to carry him, and used reed flowers as flags to stage mock battles^[2].

The Đại Việt sử ký toàn thư records: at that time, Đinh Bộ Lĩnh in Hoa Lư relied on the dangerous mountain and ravine terrain and refused to keep the status of a subordinate. The two Ngô lords planned to send troops to punish him, and Bộ Lĩnh, fearing, sent his son Liễn as a hostage to avoid being attacked. When Liễn was captured and hung on top of a pole to force Bộ Lĩnh to surrender, Bộ Lĩnh angrily said that a great man values his career, is ashamed of himself, and would not imitate the womanish weakness of loving one's child, then ordered more than ten crossbowmen to shoot at Liễn. The two lords were astonished, did not kill Liễn, and withdrew their troops^[1].

This detail shows that Đinh Bộ Lĩnh appears in the histories as a local force that already had prestige and military strength, not as someone who started from nothing.

How did Đinh Bộ Lĩnh quell the rebellion of the Twelve Warlords?

Đinh Bộ Lĩnh first relied on Trần Lãm. The Đại Việt sử ký toàn thư records: at that time the country had no ruler, the Twelve Warlords contended with one another, and no one submitted to anyone else; Đinh Bộ Lĩnh heard that Trần Minh Công was virtuous and had no son, so he and his son Liễn went to rely on him. Trần Minh Công saw that he had a handsome face and generosity, so he adopted him as a son and gave him command of the army, sending him to attack the heroes, all of whom he subdued. Phạm Phòng Át brought his troops and surrendered^[1].

Việt Nam sử lược also records: Trần Minh Công saw that Đinh Bộ Lĩnh had a handsome appearance and ambition beyond ordinary men, so he felt affection for him and gave him command of the army. After Trần Minh Công died, Đinh Bộ Lĩnh led his troops back to Hoa Lư, recruited heroes, and built his own power^[2].

According to the Đại Việt sử ký toàn thư, after Trần Minh Công died, more than five hundred sons of the Ngô lord at the Đỗ Động River led troops to attack, but were defeated by a villager named Ngô Phó sứ. Hearing the news, Bộ Lĩnh led his troops to attack the tribes at the river and in the valley, and all surrendered. From then on, officials and people in the capital and the prefectures all submitted^[1].

The Đại Nam quốc sử diễn ca summarises this process in a few verses: one day he joined Trần công, took the title Vạn Thắng, and no hero could surpass him; the four directions were gathered into one house, and the twelve warlords were all swept clean^[3]. The old histories do not fully record the sequence and timing of each battle against each warlord, so detailed lists following a sequence are usually conjectures or based on local legend, not copied directly from the official histories.

Why was Đinh Bộ Lĩnh able to quell the rebellion and unify the country?

Several factors can be drawn from the historical sources themselves. First, Đinh Bộ Lĩnh inherited the forces and prestige of Trần Lãm in the Bố Hải region, one of the strong forces of that time. Second, he chose Hoa Lư as his base, where the mountain and ravine terrain was suited to defence and gathering forces. Third, the histories record that he knew how to recruit heroes and made many forces submit, including Phạm Phòng Át bringing his troops to surrender. Fourth, the fact that the warlords fought one another exhausted the people, creating conditions for a sufficiently strong force to step forward and unify the country.

It should be said clearly that this is a synthesis and interpretation from the historical sources, not a claim fully verified by modern research. The old histories record events, while the analysis of the reasons for Đinh Bộ Lĩnh's success is an added interpretation.

When did the Đại Cồ Việt state come into being in 968 and how was it organised?

After quelling the rebellion, Đinh Bộ Lĩnh ascended the throne as emperor, adopted the national name Đại Cồ Việt, and established the capital at Hoa Lư. Việt Nam sử lược records that in the year Mậu Thìn (968) Vạn Thắng Vương ascended the throne as emperor, known as Tiên Hoàng đế, named the state Đại Cồ Việt and set the capital at Hoa Lư, and that in the year Canh Ngọ (970) he adopted the era name Thái Bình^[2]. The Đại Nam quốc sử diễn ca retells it in verse: the capital was built at Trường Yên, the era name changed to Thái Bình, he took the imperial throne and appointed the hundred officials, with a court, robes and caps, and fixed ranks^[3].

In foreign relations, Việt Nam sử lược records that in the year Nhâm Thân (972) Tiên Hoàng sent his son Liễn, the Nam Việt Vương, to the Song court, and the Song emperor granted Tiên Hoàng the title Giao Chỉ quận vương and Liễn the titles Tĩnh Hải quân Tiết độ sứ and An Nam đô hộ^[2]; the diễn ca compresses this into the line that father and son both received honours on the same day^[3]. The Song court's granting of a title to the Đinh king is an important historical fact, showing that the Đinh dynasty established diplomatic relations with the northern court, while also affirming the position of a self-ruling government.

The Đại Nam quốc sử diễn ca also has a comment about King Đinh: it regrets his lack of scholarly effort. This is a comment by the historian, not an objective assessment that has been verified. It reflects the view of Nguyễn-era scholars about a warrior king.

How should the layers of legend around Đinh Bộ Lĩnh be read?

Besides historical sources, there is a fairly thick layer of legend around Đinh Bộ Lĩnh. Phan Kế Bính's Nam Hải dị nhân liệt truyện records: it is said that in Hoa Lư động there was once a very large otter; the wife of Mr Công Trứ one day bathed in a stream and was impregnated by the otter, and when she returned home she became pregnant; when the otter was caught and eaten, its bones were thrown out onto the main road, and she picked them up and placed them on the kitchen loft; later she gave birth to Đinh Tiên Hoàng^[4].

The same book records the story of a Chinese geomancer who came to our country to examine the land and said that in the river at Hoa Lư there must be a burial site that would produce an emperor, so he hired children to dive down and look^[4]. These are folk legends recorded in a book printed in 1909, not verified historical events. They reflect how earlier generations explained why a person of ordinary origin could ascend the throne, by attributing to him a strange origin and a sacred plot of land.

When reading these layers of legend, one should distinguish clearly: the historical sources record that Đinh Bộ Lĩnh was the son of Đinh Công Trứ, returned to his homeland with his mother, and relied on Trần Lãm; while the legends about the otter and the emperor-making burial site are products of folk imagination, without value as historical documents.

Significance of the quelling of the Twelve Warlords

The quelling of the Twelve Warlords by Đinh Bộ Lĩnh and the founding of the Đại Cồ Việt state are regarded by the old histories as the start of the legitimate dynastic line: the Đại Việt sử ký toàn thư places everything up to the Ngô in its Outer Annals (Ngoại kỷ) and opens its Basic Annals (Bản kỷ) with the Đinh^[1], while Việt Nam sử lược counts the era of self-rule from the Ngô dynasty (939)^[2]. In the Đại Nam quốc sử diễn ca there is a couplet saying that the line handed down from the Hồng Bàng continues to this day, and that the legitimate succession is counted from here^[3]. This is the view of the 19th-century historian, treating the Đinh as the first legitimate dynasty.

Politically, this event ended the state of fragmented local rule and restored a central government with one emperor, one national name, and one capital. In the long term, it laid the foundation for subsequent dynasties such as the Early Lê, Lý, and Trần in building and defending independence.

However, two extreme approaches should be avoided. One is to sanctify Đinh Bộ Lĩnh as a supernatural figure, ignoring the historical context and specific political and military factors. The other is to completely deny the value of the event, claiming it was merely a power struggle among local forces. The historical sources show that this was a process of national unification with significance for the people's lives, because the warlords fighting one another caused suffering among the people.

How do the historical sources differ?

This table shows that the sources should not be read in the same way. The Đại Việt sử ký toàn thư and Việt Nam sử lược are historical sources recording events; the Đại Nam quốc sử diễn ca is historical verse; the Nam Hải dị nhân liệt truyện is a collection of legends. When there are different details between sources, it is necessary to state clearly what each source says rather than silently choosing one side.

Points not yet agreed among the sources

First, how the Twelve Warlords are recorded. The three books give the same twelve men and differ only in order and spelling: the translation of the Toàn thư writes Kiểu Công Hãn, Lã Đường and Tam Đái, the diễn ca writes Kiều Tam Chế, Lữ Đường and Vĩnh Tường. The more substantial difference is timing: the Toàn thư enters all twelve under the year 966, after Nam Tấn Vương died, while Việt Nam sử lược dates the warlord period from 945 to 967, and a note in the translation of the Toàn thư, citing the Khâm định Việt sử, holds that the warlords rose one after another^[1][2].

Second, the dates. The histories record that the Đinh dynasty began in 968, but the time when Đinh Bộ Lĩnh began to quell the rebellion and completed unification is not clearly and consistently recorded in all sources. Numbers such as 967 or 968 are commonly mentioned milestones, but should be read as milestones recorded by the old histories, not as dates firmly established by modern research.

Third, the degree of mixture with legend. Some details such as the otter story and the burial-site story appear only in unofficial histories and legends, not in the official histories. Readers should distinguish these two layers when studying Đinh Bộ Lĩnh.

Nhật Nguyệt's suggestions when studying this event

When researching Đinh Bộ Lĩnh and the rebellion of the Twelve Warlords, one should read at least two sources: an official history such as the Đại Việt sử ký toàn thư to grasp the events, and a general history such as Việt Nam sử lược for a systematic view. For details about strange origins or sacred land, they should be placed in the layer of legend and the source noted as unofficial history. For dates and numbers, the source and time should be noted, avoiding writing as if all numbers were firmly established.

Studying a historical figure such as Đinh Bộ Lĩnh is not only about memorising events, but also about learning to distinguish types of sources: official history, unofficial history, legend, and modern research. Each type of source has its own value and its own limits.