However, Trịnh Khải organized an army and fought against his half-brother and destroyed all her supporters.
His mother was Đặng Thị Huệ who undertook a war to retain his place as king, but her armies were defeated by warlord Trịnh Khải.
Đoan Nam Vương Trịnh Khải (chữ Hán:鄭楷, 1763-1786) was one of the Trịnh lords in northern Vietnam.
Trịnh Khải - Ruled 1782–86 with the name/title "Doan Nam Vương".
•
The new Trịnh Lord, Trịnh Khải, fled from his rebellious army and then committed suicide after being captured by a small band of rebellious peasants.
In 1782 as Trịnh Sam was dying, he tried to leave control over Vietnam to his son (from his favorite concubine, Đặng Thị Huệ), Trịnh Man, but his rightful heir, Trịnh Khai organized an army and fought against his half-brother.
Trịnh Khải | Trịnh lords | Nong Khai | Trịnh Khả | Trịnh Bồng | Trinh Xuan Thuan | Trinh T. Minh-ha | Trịnh Khai | Trinh Cong Son | Trịnh Cán | Coralie Trinh Thi |
Trịnh Cán - Ruled September - October 1782, defeated by his half-brother Trịnh Khai.