Mạc Đăng Dung
Nguyễn Kim claimed descent from Nguyễn Trãi, one of the top aides of Lê Lợi. He was the son of Nguyễn Hoang Du, one of the leaders of the first revolt against Mạc Đăng Dung). After the first revolt was crushed and his father executed, a second revolt against Mạc Đăng Dung took place in response to Dung's usurpation of the throne in 1527. This second revolt was led by Nguyễn Kim and his son-in-law, Trịnh Kiểm.