General John Cadwalader
From the collection of Smithsonian American Art Museum. Free to download, adapt and use — no permission needed.
During the Revolutionary War, General John Cadwalader (1742-1786) commanded troops at the battles of Brandywine, Germantown, Monmouth, and Princeton. He was much admired by his close friend General George Washington, who referred to him as "a military genius." Washington offered Cadwalader the position of Continental brigadier general, but his friend declined, preferring to become a state legislator in Maryland after the war. When Charles Willson Peale painted Cadwalader's likeness, it was intended to ornament a woman's bracelet, and in fact the original fittings for an ornamental band---similar to today's watchbands---are visible along the sides of the miniature's case.
Smithsonian American Art Museum’s own description