Magnus the Good

Magnus the Good became King of Norway at age 11 after his father, Olaf II, was killed in battle. He was proclaimed king by the Norwegian nobility who had opposed Cnut the Great's rule, restoring the native dynasty after a period of Danish domination.

Upon the death of Harthacnut, Magnus the Good inherited the Danish throne, becoming king of both Norway and Denmark. This union was based on a prior agreement between Magnus and Harthacnut, creating a personal union of the two Scandinavian kingdoms.

Magnus the Good led a Danish army to victory against the Wends (Slavic tribes) at Lyrskov Heath in present-day Germany. The battle secured Danish control over the southern Baltic coast and enhanced Magnus's reputation as a military leader.

Magnus the Good faced a rebellion from Sweyn Estridsson, a Danish nobleman who claimed the Danish throne. Magnus defeated Sweyn in several battles, forcing him into exile, but the conflict weakened Magnus's hold on Denmark and drained resources.

Magnus the Good died suddenly in Denmark at age 23, possibly from illness or an accident. His death ended the personal union of Norway and Denmark, as he had no heirs, leading to the division of his kingdoms between Harald Hardrada and Sweyn Estridsson.