The duc de Saint-Simon’s memoirs of the last decades of Louis XIV’s reign and the regency of Philippe d’Orleans are considered a masterpiece of the genre and one of the glories of French literature. His accounts of the dramatic events he witnessed have informed historians for generations, while his literary portraits have influenced French authors from Sainte-Beuve to Proust. In 1721 Saint-Simon travelled to Spain as Ambassador Extraordinary to solicit the hand of a Spanish princess for the young king Louis XV.