Thayendanegea

Mohawk Indian war chief Thayendanegea (who had converted to Christianity under the name of Joseph Brant), an English protégé and a colonel in the British army, was instrumental in persuading the Iroquois to take up arms against the American rebels. He was a chief organizer of Indian bands allied to the British, and his forces became the scourge of independence-minded settlers on the New York and Pennsylvania frontiers.
Resettled by the British in Canada after the Revolutionary War, Brant visited Albany in 1806, a rich man dressed in white man's clothing. At the request of a former Loyalist comrade-in-arms, he agreed to sit for his portrait, but only after makeshift Native attire was rounded up. He thought it "a compromise of his dignity to be painted in his civilized garb."