李惠宗
Trần Thị Dung was born in Lưu Gia village (now Hưng Hà, Thái Bình) as daughter of Trần Lý, leader of Trần clan who made their great fortune by fishing, and younger sister of Trần Thừa, the future first Retired Emperor of the Trần Dynasty.During the troubled time under the reign of Lý Cao Tông, the Crown Prince Lý Sảm sought refuge in Trần Lý's family and decided to marry the beautiful Trần Thị Dung. Afterward, it was Trần clan who helped Lý Cao Tông and Lý Sảm restored the throne in Thăng Long, therefore the Emperor appointed several members of Trần clan for high positions in royal court such as Tô Trung Từ who was uncle of Trần Thị Dung, or Trần Tự Khánh who was Trần Thừa's younger brother. In 1211 the Crown Prince Lý Sảm was enthroned as Lý Huệ Tông after the death of Lý Cao Tông, by then Trần clan's position began to rise in royal court.