The term "Jenny Lind" refers to a famous Swedish singer known for her beautiful soprano voice. She was born in 1820 and became very popular during her tours in the United States in the 1850s, mainly because of her performances managed by the showman P.T. Barnum.
"Jenny Lind" is a proper noun that refers to a specific individual, a famous Swedish soprano singer known for her performances in the 19th century.