After a few months of meticulous research, the CAEM team with the collaboration of Ellen G. Miles (curator emeritus of the Smithsonian National Portrait Gallery, USA), Jacob Simon (researcher of the National Portrait Gallery, London), Carol E. Soltis (associate curator of projects at the Philadelphia Museum of Art), Patricia H. Svoboda research coordinator, Smithsonian National Portrait Gallery) and Linda A. Thrift (curator emeritus of the American Portrait Catalogue, of the Smithsonian National Portrait Gallery), have attributed this portrait of penetrating gaze to the American painter Rembrandt Peale. Peale was the son of the famous portrait painter Charles Willson Peale (Chester, United States of America, 1741 – Philadelphia, 1828), who introduced his son to the world of art at an early age and encouraged him to continue his education by travelling around the United States and Europe during his youth. His style was influenced both by the French Neoclassicism of masters such as Jacques-Louis David (Paris, 1748 – Brussels, 1825) and by the dynamic portraiture of Benjamin West (Springfield, United States of America, 1738 – London, 1820). He ultimately created a new style within the genre of portraiture, capable of harmoniously capturing both the personality of the sitter and the atmosphere surrounding him. To achieve this, he used devices such as meticulous touches of white in the hair and eyes, bringing light and naturalness to the person portrayed.