Robert Harley (1661–1724), 1st Earl of Oxford and Mortimer

Kneller employs chiaroscuro to dramatic effect, contrasting the dark background with illuminated facial and hand features. This technique, alongside the subject's detailed, curly brown hair and expressive pose, showcases Kneller's portraiture skill.

Commissioned in 1712, the portrait was created during the height of Kneller's career as a leading court portraitist. It has been preserved in the British Museum's collection.

As a Rococo piece, the portrait reflects the artistic tastes of early 18th-century Europe, emphasizing elegance and subtle drama. Kneller's work catered to the aristocratic and political elite, of which Harley was a part.

This portrait stands as a representative work of Kneller's ability to capture the essence of his subjects, contributing to his legacy as a foremost portraitist of his era. It also serves as a historical record of Robert Harley's significance.