Valdemar Birgersson of Sweden

Valdemar Birgersson (1239–1302), eldest son of Birger Jarl, was elected King of Sweden in 1250 after his uncle Erik Eriksson died, and crowned at Linköping in 1251. Birger Jarl ruled as regent until 1266. Valdemar married Sofia of Denmark in 1260, but his affair with her sister Jutta in 1272 forced a pilgrimage to Rome.

On 14 June 1275 his brother Magnus Ladulås defeated and deposed him at Hova. He was imprisoned in Nyköping Castle in 1288 and died on 26 December 1302.