Princess Marie "Mary" Henriette Adélaïde of Liechtenstein was a French-born English writer. A foundling of unknown paternity, she was adopted by the childless English nobleman Henry Fox, 4th Baron Holland (1802–1859) and his wife, and eventually married into the Princely House of Liechtenstein.
Marie Fox, aged three, with her pointer dog Elia, painted by George Frederic Watts
An illustration of Marie on the cover of her book, Holland House
Henry Edward Fox, 4th Baron Holland of Holland, 4th Baron Holland of Foxley was briefly a British Whig politician and later an ambassador.
Portrait of Mary Augusta, Lady Holland, George Frederic Watts, between c. 1843 and c. 1844, part of the Royal Collection