Leonore

Leonore is a character in Beethoven's only opera, Fidelio. She disguises herself as a prison guard named Fidelio to rescue her husband, Florestan, from death in a political prison.

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I think the story line of the opera is cool, and Leonore's name is pretty.

Princess Leonore of Sweden, Duchess of Gotland, is the elder child of Princess Madeleine and Christopher O'Neill. She is seventh in the line of succession to the Swedish throne. At the time of her birth she was fifth in line.

Leonore is the name of the protagonist of the French fairy tale Marmoisan by Marie-Jeanne L'Heritier. Leonore is a duke's daughter who takes the guise of her deceased brother Marmoisan to serve in the army. (In French, the name is written Léonore.)

Princess Madeleine of Sweden named her daughter Leonore [Princess Leonore Lilian Maria, Duchess of Gotland, born 20th February 2014]

Leonore Cohn Annenberg (February 20, 1918 – March 12, 2009) was a billionaire former Chief of Protocol of the United States from 1981 to 1982. She was well-noted for her philanthropic efforts in education and the arts.

The third child and second daughter of prince Constantijn and princess Laurentien of the Netherlands bears this name: Leonore Marie Irene Enrica countess of Orange-Nassau, jonkvrouw (= a Dutch title) of Amsberg.