Robert Southey Esq. John Downman (1750-1824)

The picture has something of this: people, portrait, man, wear, leader, outerwear, jacket, facial expression, engraving, administration, outfit, writer, coat, actor, pensive, music.
Perhaps it’s a portrait of a man with curly hair in a black coat and white shirt, sitting in a chair with his arms crossed, looking to the side.