Ancestor worship, remember the origin is the tradition of every Vietnamese people from thousands of years, everyone desires to know where their origin is. The surname Nguyen in Vietnam has a long history. This is the most popular surname in Vietnam with about 40% of the population. In addition to Vietnam, the Nguyen are also popular in places where Vi etnamese reside throughout the world. According to The World Geography 2015, the Nguyen of Vietnam ranks 4th in the world's 10 most popular family names, with an estimated 36 million people. This book is divided into two parts: - Part 1: The Nguyen of Vietnam from prehistoric times. This section focuses on folk legends, historical events, starting from the era of the Kinh Duong Vuong Dynasty to the Hung Vuong 18th. Part 2: History of the Nguyen in Vietnam through feudal dynasties. This section is about celebrities, famous politicians. They are virtuous, talented, contributing to the preservation, protection and expansion of the land of Vietnam, honored by the people.