Trịnh Cương

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Trịnh Cương
Lord of Trịnh Clan
Lord of Northern Vietnam
Trịnh Cương.png
Trịnh Lords
Reign 1709– 1729
Predecessor Trịnh Căn
Successor Trịnh Giang
Born 1686
Died 1729
Spouse Nguyễn Thị Ngọc Phụng
Phạm Thị Ngọc Quyền
Ngô Thị Ngọc Uyên
Issue Trịnh Giang
Trịnh Doanh
more sons and daughters
Full name
Trịnh Cương
Posthumous name
An Đô Vương (安都王)
Temple name
Hy Tổ (禧祖)
House Trịnh Lords
Father Trịnh Bính
Mother Trương Thị Ngọc Chử
Nguyễn Thị Cảo(step-mother)
Religion Buddhism

Trịnh Cương (1686–1729) was the lord who ruled northern Vietnam (Tonkin) from 1709 to 1729 (his title as ruler was An Đô Vương). Trịnh Cương was born to Trịnh Bính, a grandson of the former lord Trịnh Căn. He belonged to the line of Trịnh Lords who had ruled parts of Vietnam since 1545. Like his great-grandfather and predecessor, Trịnh Căn, his reign was mostly devoted to administrative reforms.

Trịnh Cương
Vietnamese name
Vietnamese Trịnh Cương

Trịnh Cương ruled Vietnam during a time of external peace but growing internal strife. He enacted many governmental reforms in both financial matters and judicial rules. His main concern was the growing problem of landless peasants. Unlike the Nguyễn Lords who were constantly expanding their territory south, the Trịnh Lords had little room for expansion. So the land supply was essentially fixed but the population kept growing.

Trịnh Cương tried various legislative means to solve the problem. He tried to limit private land holdings. He tried to redistribute the communal fields of the small villages. Nothing really worked and the problem became very serious over the succeeding decades. According to historian R. H. Bruce Lockhart, the governmental reforms enacted by Trịnh Cương and his great-grandfather, Trịnh Căn, made the government more effective but, they also made the government more of a burden to the people. This had the effect of increasing the hatred felt by the people towards the Trịnh rulers in Hanoi.

Trịnh Cương passed an edict forbidding people to practice Christianity in 1712. Like previous efforts to suppress Christianity, this had little real effect in Vietnam. However, he tried to offer the people an alternative, and he had many Buddhist pagodas constructed during his rule.

As far as the Lê Dynasty was concerned, the emperor, Lê Dụ Tông, ruled throughout Trịnh Cương's lifetime. The two men died within a few months of each other in 1729.

Preceded by
Trịnh Căn
Ruler of Vietnam
Succeeded by
Trịnh Giang

See also Lê Dynasty.


  • Encyclopedia of Asian History, Volume 4. 1988. Charles Scribner's Sons, New York.
  • Annam and its Minor Currency Chapter 16 (downloaded May 2006)

See also[edit]