Louis XV (1710–1774) became King of France at age 5. His great-uncle Philippe II, duc d'Orléans, served as Regent during his minority. As a young ruler, Louis enjoyed a favorable public reputation and was known as "Louis le Bien-Aimé" ("Louis the Beloved"). In time, however, the debauchery of his court and his ill-advised policies made him very unpopular. Madame de Pompadour, the king's most important mistress, was also unpopular for her influence on foreign and domestic affairs, although she also patronized much of the fine interior design and decorative arts of the period.