Johann Ernst Heinsius: A Portraitist of Weimar’s Golden Age Johann Ernst Heinsius (1731-1794) emerges from the annals of 18th-century German art as a quietly significant figure, primarily known for his exquisite portraiture and miniature paintings. While not commanding the same immediate fame as some of his contemporaries – particularly within the grand salons of Paris – Heinsius’s work offers a compelling glimpse into the artistic la…