Public domain
Portrait of Maria Louisa of Hesse-Kassel, William IV, Prince of Orange-Nassau, and Amalie, Countess of Nassau-Dietz
From the collection of Rijksmuseum, Amsterdam. Free to download, adapt and use — no permission needed.
Credit linePortret van Maria Louisa van Hessen-Kassel, Willem IV, prins van Oranje-Nassau, en Amalie, gravin van Nassau-Dietz. 1850 - 1949. anonymous. Rijksmuseum, Amsterdam. Public domain.