Johann married Catharina Schmidt, daughter of Franz Schmidt, on 11 Jan 1745 in Kappelwindeck, Baden, Germany. Catharina died on 25 Jul 1792.
They had the following children:
8 M i Anton Ignaz Hörth was born on
31 Jul 1749. Date of death unknown.
+ 9 M ii Franz Josef Hörth
10 F iii Margaretha Hörth was born on 13 Jan 1755. Date of death unknown.
11 F iv Maria Anna Hörth was born on 28 Jun 1757. Date of death unknown.
12 M v Stephan Aloys Hörth was born on 26 Dec 1761. Date of death unknown.
13 M vi Ignaz Hörth. Date of death unknown.
+ 9 M ii Franz Josef Hörth
10 F iii Margaretha Hörth was born on 13 Jan 1755. Date of death unknown.
11 F iv Maria Anna Hörth was born on 28 Jun 1757. Date of death unknown.
12 M v Stephan Aloys Hörth was born on 26 Dec 1761. Date of death unknown.
13 M vi Ignaz Hörth. Date of death unknown.