Both Gaetano Donizetti and Luigi Cherubini were regarded as Beethovens greatest contemporaries?
Gaetano Donizetti: Domenico Gaetano Maria Donizetti (] ; 29 November 1797 – 8 April 1848) was an Italian composer. Luigi Cherubini:  Beethoven regarded Cherubini as the greatest of his contemporaries.
i don't know