[3][6] A subsequent 1644 marriage to Catharina Schmuck, a daughter of a well known lawyer (or professor of law[5]) produced a son, the polymath Gottfried Wilhelm Leibniz.

Juny am Sontag 1646 Ist mein Sohn Gottfried Wilhelm, post sextam vespertinam 1/4 uff 7 uhr abents zur welt gebohren, im Wassermann.

Eric John Aiton considers Friedrich Leibniz ... a competent though not original scholar, who devoted his time to his offices and to his family as a pious, Christian father.

[9]On the other hand, in an address he delivered in 1646, Friedrich equated Apollo, the Greek god of knowledge, with Lucifer the christian devil, and introduced other variants in Biblical and Greek myths, notably the view of Eve as the she-Python slaughtered by Apollo-Lucifer.

His first marriage was on 31 January 1625 to Anna Fritzsche, who died on 14 March 1634 in Leipzig, the daughter of Mag.