When Sir Henry Raeburn painted Henry David Erskine, Twelfth Earl of Buchan, he chose as his sitter one of the most eccentric and outspoken Scottish noblemen of the late eighteenth century. Erskine was a founder of the Society of Antiquaries of Scotland and a passionate advocate for Scottish history and culture, often courting controversy with his unconventional ideas and public letters. His reputation as a "patriot peer" was well known in Edinburgh salons, and his portrait by Raeburn became a talking point among contemporaries for its striking psychological insight. In the painting, Erskine is shown at a moment of thoughtful pause, his gaze directed slightly away from the viewer, suggesting a mind preoccupied with matters beyond the canvas.

His attire is formal but not ostentatious, and the careful rendering of his features—sharp eyes, prominent nose, and slightly pursed lips—conveys both intelligence and a certain stubbornness. The subdued background and gentle play of light on his face draw the viewer’s attention to his expression, rather than his surroundings or status symbols. Unlike the flamboyant portraits of English peers by Thomas Lawrence, Raeburn’s approach is intimate and direct, emphasizing character over grandeur. The precise date and circumstances of the commission remain uncertain, as is often the case with Raeburn’s portraits of Scottish society figures.

It is likely that Erskine himself, ever conscious of his public image, sat for the artist in Edinburgh during the height of his intellectual activity. The painting has passed through several private collections, reflecting the enduring interest in both sitter and artist, and today it stands as a testament to Raeburn’s ability to capture the individuality of his sitters. Within the artist’s broader body of work, this portrait exemplifies the quiet psychological depth that distinguishes Raeburn’s contribution to the portrait tradition of the late Enlightenment.