Lý Nhân Tông
Lý Dương Hoán was born in the summer of 1116 as Lý Dương Hoán to Lady Đỗ and the Marquis of Sùng Hiền (Vietnamese: Sùng Hiền hầu) who was son of the Emperor Lý Thánh Tông and younger brother of the Emperor Lý Nhân Tông. According to "Đại Việt sử ký toàn thư", Lý Dương Hoán was born right after the death of the monk Từ Đạo Hạnh, one of the most important figures of the Early Lý Dynasty, which implied that Lý Dương Hoán might be the incarnation of Từ Đạo Hạnh. At that time, the Emperor Lý Nhân Tông was unable to have his own child, and thus he decided to adopt sons of the Marquises Sùng Hiền, Thành Khánh, Thành Quảng, Thành Chiêu, Thành Hưng, so that the emperor could choose a capable successor to maintain the throne for the Lý Dynasty. Finally, being an intelligent and vivacious boy, Lý Dương Hoán was made by Lý Thần Tông the crown prince of the Lý Dynasty at the age of two in 1117.