Schleswig-Holstein | Holstein | Duchy of Holstein | Schleswig-Holstein Musik Festival | Oldenburg in Holstein | Augusta Marie of Holstein-Gottorp | Holstein (cattle) | Princess Marie Louise of Schleswig-Holstein | Frederick Louis, Duke of Schleswig-Holstein-Sonderburg-Beck | Schleswig-Holstein state election, 2012 | Schleswig-Holstein Question | Reinfeld (Holstein) | John II, Duke of Schleswig-Holstein-Sonderburg | Friedrich Wilhelm, Duke of Schleswig-Holstein-Sonderburg-Glücksburg | Fred Holstein | Frederick III, Duke of Holstein-Gottorp | Albertine, baroness Staël von Holstein | Adolf, Duke of Holstein-Gottorp | Wacken, Schleswig-Holstein | Schleswig, Schleswig-Holstein | Reformation in Denmark–Norway and Holstein | Neustadt in Holstein | Matilda of Holstein | Ludvig Holstein-Ledreborg | List, Schleswig-Holstein | John III, Count of Holstein-Plön | Holstein-Pinneberg | Holstein Kiel | Holstein-Gottorp | Hedwig of Holstein |
Mechthild (1225–1288): she married firstly in 1237 Abel of Denmark, Duke of Schleswig and later King of Denmark (this marriage provided the basis for later claims by the Schauenburgers on the Duchy of Schleswig); and secondly Birger Jarl, Regent of Sweden