He travelled to Denmark, where he and his cousin Valdemar (the later Valdemar I of Denmark) sought to canonize Sweyn's uncle and Valdemar's father Canute Lavard in 1146, under protest from Archbishop Eskil of Lund in Scania [REF].
In 1154, Sweyn was overthrown by an alliance between Canute and Valdemar, who was crowned Canute's co-ruler as Valdemar I [REF].