Joseph Ferdinand Sonnleithner was an Austrian court agent, councillor, librettist, theater director, and archivist. He was the son of Christoph Sonnleithner, brother of Ignaz von Sonnleithner and uncle of Franz Grillparzer and Leopold von Sonnleithner.
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About this person
Joseph Ferdinand Sonnleithner was an Austrian court agent, councillor, librettist, theater director, and archivist. He was the son of Christoph Sonnleithner, brother of Ignaz von Sonnleithner and uncle of Franz Grillparzer and Leopold von Sonnleithner. He was a personal friend of Ludwig van Beethoven, and he wrote numerous librettos, among them, Beethoven's stage opera Fidelio, Faniska by Luigi Cherubini and Agnes Sorel by Adalbert Gyrowetz.
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