Johannes married TREFZER, Katharina 24 Feb 1756, Weitenau, Loerrach, Freiburg, Baden-Wurttemberg, Germany. Katharina (daughter of TREFZER, Jacob and LEUGER, Kunigunda) was born 1 Mar 1739, Weitenau, Loerrach, Freiburg, Baden-Wurttemberg, Germany. [Group Sheet]