Eliza Rosanna Gilbert, Countess of Landsfeld, better known by the stage name Lola Montez, was an Irish dancer and actress who became famous as a Spanish dancer, courtesan, and mistress of King Ludwig I of Bavaria, who made her Gräfin von Landsfeld. At the start of the Revolutions of 1848 in the German states, she was forced to flee. She proceeded to the United States via Austria, Switzerland, France and London, to return to her work as an entertainer and lecturer.

Courtesan, in modern usage, is a euphemism for a kept mistress or prostitute, particularly one with wealthy, powerful, or influential clients. The term historically also referred to a courtier, a person who attended the court of a monarch or other powerful person.