He neither had nor professed any enthusiastic affection for his wife, but he lived on excellent terms with her, and bestowed some pains on the education of the only child (a daughter, Leonore) who survived infancy.
It has been thought from these two facts, and from an expression in one of the later essays, that the marriage of his daughter Leonore to Gaston de La Tour had not turned out to his satisfaction.
His Leonore (1798) formed the basis of the libretto of the Fidelio of Beethoven.
