- Profession: Violinist, pianist, teacher.
- Relation to Mahler: Teacher in Jihlava. See Music education Gustav Mahler in Jihlava.
- Correspondence with Mahler:
- Born: 1834, Pirnitz/Brtnice
- Died:
- Buried:
House Johann Brosch (Komenskeho street Nos. 23/1614, Spital Gasse No. 576).
Also called Jan Broz.
Franz Viktorin (1888) ran a Musik-Institut in Jihlava together with Johann Brosch.