Robert de Courtenay was a French nobleman who lived during the 13th century. He is best known for his role as the titular Emperor of Constantinople, a title he held from 1221 until his death in 1228. His claim to the throne was based on his marriage to the daughter of the last Latin Emperor, Henry of Flanders. During his reign, Robert struggled to maintain control over the fragmented territories of the Latin Empire in Constantinople. His rule was marked by political instability and challenges from rival factions, ultimately leading to his inability to solidify power in the region.