Trịnh Tráng
Lê Thần Tông's birth name is Lê Duy Kỳ (黎維祺). He was born in 1607 and reigned in 1619–1643 following Lê Kính Tông, was interrupted by the reign of Lê Chân Tông 1643–1649, then reigned again 1649–1662 and was succeeded by Lê Huyền Tông. He was a figurehead king under lords Trịnh Tùng, who ruled 1570–1623, then Trịnh Tráng who ruled in 1623–1657, and Trịnh Tạc who ruled 1657–1682. At this time the Tonkin was still engaged in military campaigns against Nguyễn Lords in the south.