What nationality was the 19th century actress and dancer Lola Montez, who became the mistress of King Ludwig I of Bavaria?

Marie Dolores Eliza Rosanna Gilbert was born on 17 February 1821 in Grange, County Sligo, Ireland. She was better known by the stage name Lola Montez. She 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 Countess of Landsfeld. She used her influence to institute liberal reforms. At the start of the Revolutions of 1848 in the German states, she was forced to flee. She proceeded to the United States via Switzerland, France and London, returning to her work as an entertainer and lecturer.