People Johanna van Beethoven Beethoven's sister-in-law1786 – 1869 Johanna van Beethoven1786 – 1869Kaspar Anton Karl van Beethoven8 April 1774 – 15 November 1815 Karl van Beethoven4 September 1806 – 13 April 1858 Spouses and partnersKKaspar Anton Karl van Beethoven8 April 1774 – 15 November 1815ChildrenKarl van Beethoven4 September 1806 – 13 April 1858 From Wikipedia and Wikidata (public domain), updated daily.
