Simon Le Duc

Simon Le Duc, more commonly Leduc was a French violinist, soloist at the Concert Spirituel, music publisher and composer. His younger brother, Pierre Le Duc (1755–1818), was also a violinist. Leduc was a pupil of the famous violinist and professor at the Paris Conservatoire, Pierre Gaviniès. He later became director of the Concerts Spirituel, with Gaviniès and François-Joseph Gossec

During the child prodigy Wolfgang Amadeus Mozart's first tour of Europe in 1763-64, Wolfgang and his father Leopold Mozart had a chance to hear Leduc play. Leopold, an authority on violin performance who had published a treatise on violin playing in 1756 which is still read today, praised Leduc in his travel diary: "He plays well." Leduc also composed many pieces for violin, including at least two sets of violin sonatas (published as opuses 1 and 4), three violin concertos, and some chamber music.

Read more at https://en.wikipedia.org/wiki/Simon_Le_Duc