Lý Thánh Tông
There was only a brief account about Lý Đạo Thành in the "Đại Việt sử ký toàn thư" but according to some folk stories, Lý Đạo Thành was born in 1053 to a noble family in Thái Cực, Thọ Xương. It was said that Lý Đạo Thành was a member of the Lý royal family and already held the position of chancellor (Vietnamese: "thái sư") when the emperor Lý Thánh Tông died in 1072. Together with the Empress Mother Thượng Dương, the chancellor was appointed by Lý Thánh Tông to act the regency for his successor Lý Nhân Tông who was only 7 at that time. According to the historian Ngô Sĩ Liên, during the purge of Empress Mother Thượng Dương by the emperor and his natural mother Ỷ Lan in 1073, Lý Đạo Thành was transferred to the position of governor in the southern province Nghệ An likely because he advised against the act of Ỷ Lan and the emperor. One year later, the emperor decided to restore Lý Đạo Thành to his former post. In his "Việt Nam sử lược", Trần Trọng Kim remarked that Lý Đạo Thành was not only a competent official but also possessed a strong and righteous character, therefore he had an important contribution in the stability and prosperity of Đại Việt during the early years of Lý Nhân Tông's reign.