Magnus IV of Sweden vs Michael III

Magnus IV was crowned King of Sweden at the age of three, succeeding his grandfather Birger Magnusson. His minority led to a regency council ruling Sweden until he came of age.

Magnus IV inherited the throne of Norway from his grandfather Haakon V, becoming king of both Sweden and Norway. This personal union united the two kingdoms under a single monarch for the first time.

Magnus IV was deposed by Swedish nobles led by Albert of Mecklenburg, who was elected king. Magnus was forced into exile in Norway, ending his rule over Sweden after 45 years.

Magnus IV died in exile in Norway after being shipwrecked off the coast of Bergen. His death marked the end of the Swedish-Norwegian personal union, as Norway passed to his son Haakon VI.

Michael III became Byzantine emperor at age two after the death of his father Theophilos. His mother Theodora served as regent. His reign saw the final restoration of icon veneration and a cultural revival.

Under the regency of Theodora, the Council of Constantinople in 843 formally restored the veneration of icons, ending the second iconoclast period. This event is celebrated as the 'Triumph of Orthodoxy' in the Eastern Orthodox Church.

Michael III sponsored the mission of Saints Cyril and Methodius to the Slavs. They created the Glagolitic alphabet and translated the Bible into Old Church Slavonic, spreading Christianity and literacy among the Slavic peoples.

Michael III was assassinated in his bedchamber by his co-emperor Basil I, who then became sole emperor. Michael's reign ended the Macedonian dynasty's rise. His death marked the beginning of the Macedonian Renaissance.