Over what time period did the dynasty of which Eric Christoffersen of Denmark was a member provide the Kings of Denmark?
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. The dynasty is named after its ancestor Estrid Svendsdatter. The dynasty is sometimes called the "Ulfinger", after Estrid's husband, Ulf the Earl.
Karolinska förbundet Karolinska förbundet is a Swedish learned society for the study of the Caroline era in Swedish history, i.e. the rule of kings Charles X, Charles XI and Charles XII, 1654–1718.