- John Walter Gregory, FRS, FRSE, FGS (27 January 1864 – 2 June 1932) was a British geologist and explorer, known principally for his work on glacial geology and on the geography and geology of Australia and East Africa.
- Johann Nikolaus Forkel (Wikipedia)
Johann Nikolaus Forkel (22 February 1749 – 20 March 1818) was a German musicologist and music theorist, generally regarded as among the founders of modern musicology. His publications include Johann Sebastian Bach: His Life, Art, and Work, the first substantial survey on the life and works of Johann Sebastian Bach.