Schleswig-Holstein-Sonderburg-Augustenburg | Titles by Name Duchesses of Schlesvig-Holstein-Sonderburg-Augustenburg Dukes of Schlesvig-Holstein-Sonderburg-Augustenburg Dukes of Schleswig-Holstein-Sonderburg-Augustenburg Princes of Schlesvig-Holstein-Sonderburg-Augustenburg Princesses of Schlesvig-Holstein-Sonderburg-Augustenburg