Hat of Hendrik Casimir I - Public domain dedication image

Hendrik Casimir was the son of Ernst Casimir. When his father lost his life in 1632, Hendrik succeeded him as stadholder of Friesland, Drenthe, and Groningen. Hendrik also met a violent death: he was shot from his horse in the Flemish city of Hulst in 1640. This is the hat he was wearing at the time. Adjacent to it is the bullet that struck him in the back.