Polykarp Leyser IV (4 September 1690 in Wunstorf – 7 April 1728 in Helmstedt) was a German Lutheran theologian, philosopher, physician, lawyer and historian. He was the son of Polykarp Leyser III, the great-grandson of Polykarp Leyser II and the great-great grandson of Polykarp Leyser the Elder, all also theologians. External links DNB entry ADB entry 1690 births 1728 deaths German Lutheran theologians German philosophers 18th-century German physicians 18th-century German lawyers 18th-century German historians German male non-fiction writers People from Wunstorf