Ngo Quyen's immediate heirs proved unable to maintain a unified state. After his death in 944, Duong-Binh Vuong Tam-Kha usurped the throne for a brief time—until Ngo Quyen's two sons, Ngo Nam-Tan Vuong Xuong-Van and Ngo Thien-Sach Vuong Xuong-Ngap, finally established a joint rule, which lasted until the collapse of the Ngô Dynasty in 954. Wikipedia
The definitive Wikipedia entry for Ngo Quyen. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Ngo_Quyen
