Jacob was born on August 8th, 1728. Jacob's father was Martin Zorn and his mother was Ursula Blum. His paternal grandparents were Martin Zorn and Ursula Ade. He had three brothers and a sister, named Melchior, Martin, Ursula and Anna Maria. He was the oldest of the five children. He died at 7 months old on April 5th, 1729.