Title: Ông Ninh cổ truyện
Description: History of Ông Ninh (Ninh Quận Công Trịnh Toàn), son of Prince Trịnh who was appointed to Nghệ An to against the prince Hiền. After the death of Prince Trịnh, his brother Prince Tây succeeded and recall him to the kingdom.
Subjects: Kings and rulers, Biography, History
Places: Vietnam
Time periods: Later Le dynasty, 1428-1787