Brunsvick, Therese Gräfin#
b. Bratislava, Slovakia (then Pressburg), July 27, 1775, d. Pest (Budapest), Sept. 23, 1861, sister of Count B.; L. van Beethoven dedicated his piano sonata op. 57 (Appassionata) to her. B. is known as L. van Beethoven's "immortal beloved".