Background
Leopold Louis was born in Lauterecken in 1625 as the youngest son of George Gustavus, Count Palatine of Veldenz, from his second marriage to Maria Elizabeth of Palatinate-Zweibrücken (7 November 1581 – 18 August 1637), daughter of Duke John I.
After his father"s death in 1634 he succeeded him as his elder brothers had already died.