Han var uekte Sønn av Valdemar 2. Han vart oppfostra hjemme hosfaren. Han var Hertug av Estland og Reval. I 1232 fekk hanBle kinge, da i Danmark nå i Sverige. He was the illegitimateson of Valdemar 2. He was raised in his father's home. He was Duke of Estonia and Reval. In 1232 he got Blekinge, then Denmark, now Sweden.