when was the  Irish dancer and actress which Leila Mackinlay novel was  based on born 
Leila Mackinlay:  Some of her novels are based on real people like Madame Vestris, Lola Montez or Jane Elizabeth Digby; she also wrote "Musical Productions", a musical book. Lola Montez: Marie Dolores Eliza Rosanna Gilbert, Countess of Landsfeld (17 February 1821 – 17 January 1861), 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 Countess of Landsfeld.
17 February 1821