was born at the Jagdschloss Deinschwang (a hunting lodge) near Amberg in the Upper Palatinate. He was the son of Frederick IV and of Louise Juliana of Orange-Nassau, the daughter of William the Silent and Charlotte de Bourbon-Montpensier. An intellectual, a mystic, and a Calvinist, he succeeded his father as Prince-Elector of the Rhenish Palatinate in 1610. He was responsible for the construction of the famous Hortus Palatinus gardens in Heidelberg.