 During the second and third Mongol invasions of Đại Việt, the Emperor Nhân Tông and his father the Retired Emperor Thánh Tông were credited as the supreme commanders who led the Trần dynasty to the final victories and since established a long period of peace and prosperity over the country.Trần Nhân Tông was born on November 11 of the lunar calendar 1258 as Trần Khâm, the first son of the Emperor Trần Thánh Tông, who had been ceded the throne by Trần Thái Tông for only eight months, and Empress Thiên Cảm Trần Thị Thiều.It was said that the newborn Trần Khâm was so fine that his grandfather Thái Tông and father Thánh Tông named him as Kim Tiên đồng tử (Pupil of the Heavenly Kim Tiên).