abstract:Prince Chiêu Minh Trần Quang Khải (1241–1294) was the third son of Trần Thái Tông, first emperor of the Trần Dynasty of Vietnam. Being the younger brother of the Emperor Trần Thánh Tông and holding the position of grand chancellor of the Trần Dynasty for many years, Trần Quang Khải was one of the most important figures of the Trần family and the royal court during the reigns of emperors Thánh Tông and Nhân Tông.