1036 – Marriage of Henry III of Germany and Gunnhild
This is not just any medieval marriage. This was a Cnut the Great and Emma of Normandy making the most of a political opportunity in Europe. They sent their daughter Gunnhild to Germany at a young age so she could be groomed for her marriage to Henry. The marriage took place in Nijmegen and was rather short-lived as Gunnhild died just two years later. She gave Henry one daughter.
Read: Elisabeth Muir Tyler, England in Europe: English Royal Women and Literary Patronage, c.1000–c.1150.