李惠宗
During the troubled time under the reign of Lý Cao Tông, the Crown Prince Lý Sảm sought refuge in the family of Trần Lý and decided to marry his beautiful daughter Trần Thị Dung in 1209. Afterward, it was the Trần clan who helped Lý Cao Tông and Lý Sảm restore the throne in Thăng Long. As a result, the Emperor appointed several members of the Trần clan to high positions in the royal court, such as Tô Trung Từ, who was an uncle of Trần Thị Dung, and Trần Tự Khánh and Trần Thừa, who were Trần Lý's sons. In 1211 the Crown Prince Lý Sảm was enthroned as Lý Huệ Tông after the death of Lý Cao Tông. By that time the Trần clan's position began to rise in the royal court.