Mr. Hooper was the son of Robert King Hooper, who owned a fishing fleet that worked out of Marblehead, Massachusetts. The younger man already sports the rotund physique that Copley had captured in a portrait of Hooper's father years earlier. Behind him, the sea, visible through an open window, recalls the source of his family’s riches. Robert had graduated from Harvard in 1763, and Copley's painting shows him settling into the comfortable life of a merchant prince.