鄭松
In 1623, the current lord, Trịnh Tùng fell ill and give Trịnh Tráng his position and army. His brother, Trịnh Xuân was jealous and want to be the lord. Trịnh Xuân tried to kill Trịnh Tùng with Lê Kính Tông - a current king of Lê. But they did not succeed.