Eric Christoffersen of Denmark was a member of the dynasty that ruled Denmark during what years?
Eric Christoffersen of Denmark:  He was a member of the House of Estridsen. House of Estridsen: The House of Estridsen, sometimes called the Estridsen or Estrith Dynasty, was the dynasty that provided the Kings of Denmark from 1047 to 1412.
1047 to 1412