John Singleton Copley was a renowned artist during the late 18th and early 19th centuries. He is widely recognized for his portraits and historical paintings. Some synonyms for the name John Singleton Copley would include the "American Hogarth" and the "Painter of Patriots" due to his depictions of prominent figures in American and British history. Another synonym could be the "Bostonian Master" due to his ties to the city of Boston where he became a prominent artist. Overall, John Singleton Copley's skill and artistry have left a lasting impact on the art world and continue to be admired to this day.