 Recently historians have found that this name had existed in older books in which Vietnamese referred to their country as Vietnam.The Period of Division with its many tragedies and dramatic historical developments inspired many poets and gave rise to some Vietnamese masterpieces in verse, including the epic poem "The Tale of Kiều" ("Truyện Kiều") by Nguyễn Du, "Song of a Soldier's Wife" ("Chinh Phụ Ngâm") by Đặng Trần Côn and Đoàn Thị Điểm, and a collection of satirical, erotically charged poems by a female poet, Hồ Xuân Hương.In 1784, during the conflict between Nguyễn Ánh, the surviving heir of the Nguyễn lords, and the Tây Sơn dynasty, a French Roman Catholic prelate, Pigneaux de Behaine, sailed to France to seek military backing for Nguyễn Ánh.