i think this is a detail of a knock off of a hagiographic painting by Johann Zoffany titled “Death of Captain Cook”. paintings claiming to depict deaths of famous explorers were very popular in the late 18th century, as european genocidal colonialism spread across the américas and southern Pacific. these works of art were their days marketing & advertising for european settler colonialism. they always depicted the colonialists as unique, whiter than white people framed by the darkness of indistinguishable black and brown natives.