Johann Karl Betz was born on May 7, 1740 in Sennfeld, Baden, Prussia and died on January 4, 1816 in Sennfeld, Baden, Prussia at the age of 75. He married Maria Wilhelmina Hespelt on February 17, 1767. She was born on December 10, 1741 in Unterkessah, Baden, Prussia and died on June 14, 1785 in Sennfeld, Baden, Prussia at the age of 43.

Johann Gorg Andreas Betz, son of Johann Karl Betz and Maria Wilhelmina Hespelt, was born on August 17, 1772 in Sennfeld, Baden, Prussia and died on February 16, 1829 in Sennfeld, Baden, Prussia at the age of 56. He married Marie Barbara Gramlich, daughter of Johann Conrad Gramlich and Maria Barbara Throm, on July 26, 1802 in Sennfeld. She was born on October 1, 1779 in Sennfeld, Baden, Prussia and died on November 27, 1839 in Sennfeld, Baden, Prussia at the age of 60.

Eva Christina Betz, daughter of Johann Gorg Andreas Betz and Marie Barbara Gramlich, was born on July 6, 1816 in Sennfeld, Baden, Prussia and died on December 28, 1878 in Sennfeld, Baden, Prussia at the age of 62. She married Johann Heinrich Martin Heckmann, son of Johann Matthaus Heckmann and Anna Margaretha Eckhard, on September 25, 1836 in Sennfeld, Baden. He was born on November 24, 1812 in Sennfeld, Baden, Prussia and died on February 12, 1883 in Sennfeld, Baden, Prussia at the age of 70.