 As a dowager, Sophia of Schleswig-Holstein-Sonderburg (1579–1658), widow of Philip II, Duke of Pomerania, lived in Treptow.Sophia's dower was a former nunnery, which she converted into a palace.While in Swedish service and thereafter Duke Francis Henry of Saxe-Lauenburg spent a lot of time with Duchess dowager Sophia in Treptow.