Wallace Collection the largest, most important and extant collection of French 18th-century decorative arts in the world, rivalled only by the triumvirate of the Musée du Louvre, Château de Versailles and Mobilier National in France. The Wallace Collection is a non-departmental public body and admission is free. The Wallace Collection is a museum which displays the works of art collected in the 18th and 19th centuries by five generations of a British aristocratic family – the first four Marquesses of Hertford and Sir Richard Wallace, the illegitimate son of the 4th Marquess. In the 19th century, the Marquesses of Hertford were one
Marquess of Northampton its Royal Charter. Lord Northampton married Margaret Douglas-Maclean-Clephane, daughter of Major-General Douglas Maclean Clephane. He was succeeded by his eldest son, the third Marquess. In 1831 he assumed by Royal licence the additional and principal surname of Douglas. When he died the titles were inherited by his younger brother, the fourth Marquess. He was an admiral in the Royal Navy. Lord Northampton assumed in 1851 by Royal licence the additional surname of Maclean and in 1878 upon succeeding to the titles that of Douglas. He was succeeded by his second but eldest surviving son, the fifth Marquess. He represented Stratford-on-Avon