Martin Janus
German musician and theologian
Martin Janus (also Martin Jahn, Jähn and Jan; c. 1620 – c. 1682) was a German Protestant minister, church musician, hymnwriter, teacher and editor. He wrote the lyrics of the hymn "Jesu, meiner Seelen Wonne", which became popular in the arrangement of a Bach chorale as Jesu, Joy of Man's Desiring.
Career
Born in Merseburg, Janus inscribed to the University of Königsberg on 14 March 1644. He probably received musical education even before. After studying theology for several semesters, he became church musician (Kantor) in Steinau, part of the Duchy of Oppeln. During the Thirty Years' War, he had to flee because the area became Catholic again during the Counter-Reformation. Janus worked as the music director for two churches in Sorau in Lower Lusatia, probably supported by Freiherr Sigismund Seifried von Promnitz. After the death of Promnitz in 1654, Janus moved to Sagan where he became rector and musician at the municipal school (Stadtschule).
The public source identifies “Martin Janus” as german musician and theologian. This brief keeps that definition visible, then builds a research path around Martin, Janus and German.
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The entry’s evidential value lies in the named roles, institutions and publications that can be tested against primary documentation. The source revision retrieved here is dated Sep 7, 2025. The linked authority identifier is Q1904139. 2 of 2 selected statements include explicit references; 2 carry qualifiers and 0 use preferred rank. The first chronological checks are 1620, 1682, 1644 and 1654.
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This entry incorporates text from “Martin Janus” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.