 Trần Thánh Tông had one empress, the Empress Thiên Cảm Trần Thiều, fifth daughter of his uncle Trần Liễu.The first son of Thánh Tông, Trần Khâm, was born on November 11 of lunar calendar, 1258, only 8 months after the enthronement of the Emperor, he was entitled as Crown Prince in December 1274.His second son, Prince Tá Thiên Trần Đức Việp was born in 1265 The only daughter of Trần Thánh Tông was Princess Thiên Thụy who married to Prince Hưng Vũ Trần Quốc Nghiễn, son of Trần Quốc Tuấn.