Background
Details of Cảo"s early life are unknown except that he was a low-ranking mandarin of Lê Dynasty and he claimed himself the descendant of emperor Trần Thái Tông of Trần Dynasty and related with mother of Trần Thánh Tông, empress Quang Thục.
Career
Cảo born in Dưỡng Chân, Thuỷ Đường (present day Thuỷ Nguyên, Hải Phòng). In March 1516, Cảo proclaimed himself "Đế Thích giáng trần" ("incarnation of Śakra") and recruited fighters at Quynh Lam Pagoda in Đông Triều, a religious site reputed to have miraculous powers. After shaving their heads, he marched them unopposed, ten thousand strong, through the Kinh Bac districts of Quebec Duong and Tiên Du down to the plains of Gia Lâm to Từ Liêm in Sơn Tây Province.
In May 1516, Cảo"s force captured Thăng Long and forced emperor Lê Chiêu Tông flee to Tay Do.
Thereafter, the Lê loyalists attacked and recaptured Thăng Long and made Cảo retreat back to his Hai Duong-Kinh Bac border stronghold. Then, a long war was resulted between the Lê loyalists and Cảo"s rebels.
From this point on, no further information was recorded about Trần Cảo.