Johann Christian Friedrich Haeffner
Born: 2nd March 1759, Oberschonau, Germany
Died: 28th May 1833, Uppsala, Sweden
Nationality: German-born Swedish
Johann Christian Friedrich Hæffner was a German-born Swedish composer.
Hæffner received his first musical education with the Schmalkalden organist Johann Gottfried Vierling. He studied in Leipzig from 1776, and then worked as a music conductor in theatres in Frankfurt am Main and Hamburg from 1778 to 1780. He moved to Stockholm, Sweden in 1781 at the invitation of the German congregation there (Tyska kyrkan) to assume the position of organist, which he held until 1793. The same year (1781) he was employed at the Royal Theatre in Stockholm as well as conductor of the orchestra for the Stenborg theatres.
Read more at https://en.wikipedia.org/wiki/Johann_Christian_Friedrich_Hæffner