Johann Conrad Holder was born on 27 December 1761 at
Dühren, Baden-Württemberg, Germany. He was the son of
Johann Conrad Holder and
Philippina Charlotta Seltzer. Johann Conrad Holder married
Maria Barbara Böhm, daughter of
Andreas Böhm, on 14 November 1786 at
Dühren, Baden-Württemberg, Germany. Johann Conrad Holder married
Maria Allgeier, daughter of
Johann Caspar Allgeier and
Juliane Margaretha Carle, on 10 January 1797 at
Dühren, Sinsheim, Baden-Württemberg, Germany. Johann Conrad Holder died on 7 March 1845 at
Dühren, Baden-Württemberg, Germany, at age 83.