Johannes married Maria Elisabetha Keller on 21 Feb 1713 in Busenberg, Pfalz, Bayern. Maria (daughter of Johannes Valentin Keller and Anna Barbara Fischer) was born in 1692 in Busenberg, Pfalz; died in in Busenberg, Pfalz. [Group Sheet] [Family Chart]

1. Anna Barbara Haslacher was born on 27 Feb 1714 in Busenberg, Pfalz; died on 14 Nov 1779 in Bundenthal, Pfalz; was buried on 15 Nov 1779 in Bundenthal, Pfalz.
2. Johannes Jakob Haslacher was born on 25 Nov 1717 in Dahn, Pfalz; was christened on 25 Nov 1717 in Dahn, Pfalz; died on 5 Dec 1782 in Busenberg, Pfalz.
3. Joseph Haslacher was born in 1729 in Busenberg, Pfalz; died on 10 Oct 1773 in Busenberg, Pfalz.