Đinh Bộ Lĩnh
After conquering ten of the eleven warlords Đinh Bộ Lĩnh then proclaimed himself emperor in 968 A.D. To deal with the last warlord Emperor Đinh Bộ Lĩnh assigned Nguyễn Bặc the task, for it was this obstinate warlord, Nguyễn Thủ-Tiệp, that had killed Nguyện Bặc's older and only brother, Nguyễn Bồ. After three or four battles Nguyễn Bặc rooted Nguyễn Thủ-Tiệp out of his stronghold at Tiên-Du, the old provincial heartland of the kingdom. Nguyễn Thủ-Tiệp fled south to Diễn Province near the Cham frontier and died there a few months later. Nguyễn Bặc then returned in triumph to the newly established capital at Hoa-Lư.