Valdemar II of Denmark
Canute became the first Duke of Schleswig and – subsequently – the first so-called border-prince, who was both a Danish and German vassal at the same time, a position leading towards the historical double position of Southern Jutland. Canute was an ancestor of the Valdemarian kings ("Valdemarerne") and of their corresponding royal line. He was the father of King Valdemar I of Denmark (14 January 1131 – 12 May 1182) ("Valdemar den Store") and grandfather of King Valdemar II of Denmark ("Valdemar Sejr"). The reign of King Valdemar I saw the rise of Denmark, which reached its zenith under his second son, and successor, King Valdemar II of Denmark.