Who married Toghon (son of Kublai)?

Toghon (died 1301) was the ninth son of Kublai Khan, founder of the Yuan dynasty. He was a commander of the Mongol forces in the Mongol invasions of Vietnam.

An Tư (chữ Hán: 安姿, 1267 – ?), was a princess during the Trần dynasty (1225–1400), the youngest offspring of emperor Trần Thái Tông. The exact year of her birth and death are unknown. The Đại Việt sử kí toàn thư (1675) only records that “the servants were ordered to give Princess An Tư to Togon to buy time”.