Empress Thừa Thiên, born Tống Phúc Thị Lan, was the first wife of Nguyễn Phúc Ánh and mother of Crown Prince Nguyễn Phúc Cảnh.
She was a daughter of general Tống Phước Khuông of the Nguyễn lords. Nguyễn Ánh married her when he was 18. Wikipedia
Born: January 19, 1762, Thanh Hóa, Vietnam
Died: February 22, 1814 (age 52 years), Phú Xuân
Spouse: Gia Long (m. 1778–1814)
Parents: Tống Phúc Khuông
Children: Nguyễn Phúc Cảnh and Nguyen Phuc Chieu
Grandchildren: Nguyễn Phúc Mỹ Đường and Nguyễn Phúc Mỹ Thùy