Mạc Đăng Dung
After a series of political crises that made both Lê Uy Mục and his successor Lê Tương Dực assassinated, Mạc Đăng Dung continued to gain power and rank in the military. With the enthronement of the young emperor Lê Chiêu Tông in 1516, a power struggle in the court ensued to the level of a civil war. From 1516 to 1520, the warlords of Nguyễn Hoàng Dụ and Trịnh Duy Sản, Nguyễn Kính and Trần Cao were fighting for power. Mạc Đăng Dung initially led the forces loyal to King Lê Chiêu Tông against the warlords, he eventually defeated the warlords and gained enough power to force Lê Chiêu Tông to abdicate in 1522 and install the puppet Emperor Lê Cung Hoàng to the throne. Lê Chiêu Tông fled the court with the support of the warlord Trịnh Tuy to Thanh Hóa where they fought against Mạc Đăng Dung until they were defeated and captured in 1526.