Valdemar III of Denmark
Valdemar III (1314–1364), son of Duke Eric II of Schleswig and Adelaide of Holstein, was placed on the Danish throne in 1326 when Holstein and Danish nobles deposed Christopher II; as he was only eleven, his maternal uncle Gerhard III of Holstein ruled as regent. The Constitutio Valdemariana barred any one man from holding Denmark and Schleswig together, so Valdemar enfeoffed Schleswig to his uncle.
Peasant revolts in Zealand and Jutland weakened the regime, and in 1329 Christopher II returned to the throne while Valdemar resumed rule as Duke of Schleswig until his death.