Leopold von Sonnleithner

Leopold Andreas Ignaz Sonnleithner, ab 1828 Leopold Edler von Sonnleithner, bornNovember 1797 in Wien diedMarch 1873 in Vienna, was an Austrian lawyer and a wellknown personality of the Viennese Classical music scene. He was a friend and patron of Ludwig van Beethoven, Franz Schubert, Franz Grillparzer, and Carl Czerny.

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Source: Wikipedia