李惠宗
Empress Thuận Thiên (Lý Ngọc Oanh) (1216–1248) was the second empress of Trần dynasty, she succeeded her younger sister Empress Chiêu Thánh in 1237 by an arrangement of Trần Thủ Độ in which Prince Hoài Trần Liễu was forced to give up his 3-month pregnant wife Princess Thuận Thiên to the Emperor Trần Thái Tông. Thuận Thiên was born in the royal family of the Lý dynasty as the first child of the Emperor Lý Huệ Tông and Lady Thuận Trinh Trần Thị Dung with whom she witnessed the turbulent time of the Late Lý and Early Trần Dynasty. She was mother of four princes including the second emperor of the Trần Dynasty Trần Thánh Tông and grand chancellor Prince Chiêu Minh Trần Quang Khải.