|House of Estridsen|
|Parent house|| House of Knýtlinga (maternal)|
House of Munsö (hypothetical 18th century theory)
|Country|| Denmark, Norway and Sweden |
|Founder||Sweyn II of Denmark|
|Current head||Extinct, last monarch of this House was Margaret I (r. 1387–1412)|
Knud Mogensen Løvenbalk (last known agnatic member of the family, died after June 1598)
|Titles|| King of Denmark,|
Queen of Norway,
Queen of Sweden,
King of Sweden,
Duke of Schleswig,
Count of Flanders,
Duke of Gothenland
|Cadet branches||Abelslægten line (extinct 1375)|
Løvenbalk line (extinct after June 1598)
The House of Estridsenwas a 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. The dynasty also provided three of the rulers of Sweden in the years 1125–1412. Their family coat of arms became the coat of arms of Denmark and therefore influenced the coat of arms of Tallinn and the coat of arms of Estonia.
The Royal Court of Denmark does not differentiate between different royal houses among the early Danish kings, but uses the term "the descent of Gorm the Old" about all the pre-Oldenburg monarchs.
The name of the Estridsen dynasty recalls their acquisition of the Danish crown through the marriage of Ulf the Earl to Estrid Svendsdatter of the House of Knýtlinga, daughter of Sweyn Forkbeard and sister of Cnut the Great. Later genealogies (introduced by the Danish historian Jakob Langebek in the 18th century)trace the family from Jomsviking leader Styrbjörn the Strong, a scion of the Swedish royal family, who in turn is given a descent from legendary King Sigurd Hring, regarded as mythical by most modern historians (no actual sources mention such an ancestry). Reliable ancestry traces back no earlier than Ulf's own father, the obscure Thorgil Sprakling and grandfather Björn (in sources called Ursius), the latter thus alternatively being identified as the above Styrbjörn by Langebek.
The dynasty reached its peak with the Kalmar Union, when its members reigned as kings of Denmark, Norway and Sweden in personal union. The dynasty came to end in 1412 with the death of its last member Queen Margaret I. All of the subsequent monarchs of Denmarks are cognatic descendants of the House of Estridsen.
Valdemar II, called Valdemar the Victorious or Valdemar the Conqueror, was the King of Denmark from 1202 until his death in 1241. The nickname Sejr is a later invention and was not used during the King's own lifetime. Sejr means victory in Danish.
Valdemar I of Denmark, also known as Valdemar the Great, was King of Denmark from 1146 until his death in 1182. The reign of King Valdemar I saw the rise of Denmark, which reached its zenith under his second son, and successor, King Valdemar II of Denmark.
Richeza of Poland, a member of the House of Piast, was queen of Sweden and princess of Minsk through her three marriages.
Sweyn II Estridsson was King of Denmark from 1047 until his death in 1076. He was the son of Ulf Thorgilsson and Estrid Svendsdatter, and the grandson of King Sweyn I Forkbeard through his mother's line. He was married three times, and fathered 20 children or more out of wedlock, including the five future kings Harald III Hen, Canute IV the Saint, Oluf I Hunger, Eric I Evergood, and Niels.
Eric IV, also known as Eric Ploughpenny or Eric Plowpenny, was king of Denmark from 1241 until his death in 1250. He was the son of Valdemar II of Denmark by his wife, Berengaria of Portugal, and brother of King Abel of Denmark and King Christopher I of Denmark
Niels was the King of Denmark from 1104 to 1134. Niels succeeded his brother Eric Evergood and is presumed to have been the youngest son of King Sweyn II Estridson. King Niels actively supported the canonization of Canute IV the Holy and supported his son Magnus I of Sweden after he killed his rival for the succession, Knud Lavard. His secular rule was supported by the clergy. Niels was killed in an ensuing civil war, and his successor was Eric II Emune.
Christopher I was King of Denmark between 1252 and 1259. He was the son of Valdemar II of Denmark by his second wife, Berengaria of Portugal. He succeeded his brothers Eric IV Plovpenning and Abel of Denmark on the throne. Christopher was elected King upon the death of his older brother Abel in the summer of 1252. He was crowned at Lund Cathedral on Christmas Day 1252.
Eric II the Memorable was king of Denmark between 1134 and 1137. Eric was an illegitimate son of Eric I of Denmark, who ruled Denmark from 1095 to 1103. Eric the Memorable rebelled against his uncle Niels of Denmark, and was declared king in 1134. He punished his adversaries severely, and rewarded his supporters handsomely. He was killed by a subject in 1137 and was promptly succeeded by his nephew Eric III of Denmark.
Sverker II or Sverker the Younger was King of Sweden from 1195 or 1196 to 1208.
Sweyn III Grathe was the King of Denmark between 1146 and 1157, in shifting alliances with Canute V and his own cousin Valdemar I. In 1157, the three agreed a tripartition of Denmark. Sweyn attempted to kill his rivals at the peace banquet, and was subsequently defeated by Valdemar I at the Battle of Grathe Heath and killed.
The Treaty of Ribe was a proclamation at Ribe made in 1460 by King Christian I of Denmark to a number of Holsatian nobles enabling himself to become Count of Holstein and regain control of Denmark's lost Duchy of Schleswig. The most famous line of the proclamation was that the Danish Duchy of Schleswig and the County of Holstein within the Holy Roman Empire, should now be, in the original Middle Low German language, Up Ewig Ungedeelt, or "Forever Undivided". This was to assume great importance as the slogan of German nationalists in the struggles of the 19th century, under completely different circumstances.
Harald III was King of Denmark from 1076 to 1080. Harald III was an illegitimate son of Danish king Sweyn II Estridsson, and contested the crown with some of his brothers. He was a peaceful ruler who initiated a number of reforms. Harald was married to his cousin Margareta Hasbjörnsdatter, but did not leave any heirs, and was succeeded by his brother Canute IV the Saint. Four of his half-brothers were in turn crowned Danish kings, with his youngest brother becoming the Danish king known as Harald IV, Danish: Harald Olpe.
Harald Kesja, Harald the Spear, (1080–1135) was the son of Eric I of Denmark and anti-king of Denmark.
Canute V Magnussen was a King of Denmark from 1146 to 1157, as co-regent in shifting alliances with Sweyn III and Valdemar I. Canute was killed at the so-called Bloodfeast of Roskilde in 1157. Nothing certain is known about his person and character.
Canute Lavard was a Danish prince. Later he was the first Duke of Schleswig and the first border prince who was both a Danish and a German vassal, a position leading towards the historical double position of Southern Jutland. He was killed by his cousin Magnus, who saw him as a rival to the Danish throne. Canute Lavard was canonized in 1170.
The Battle of Grathe Heath was fought in 1157 between the Danish armies of Valdemar I and his rival for the Danish throne, Sweyn III. Valdemar's forces won the battle, and Sweyn III was slain while attempting to flee.
Ingeborg Eriksdotter was a Swedish princess and duchess, daughter of King Eric X of Sweden, eldest sibling of King Eric XI of Sweden, wife of Birger Jarl, and mother of Kings Valdemar and Magnus III of Sweden.
Matilda of Holstein or Mechthild was a Danish queen consort, married to King Abel of Denmark and later to Birger Jarl, Regent of Sweden.
Helvig of Schleswig, was a Danish Queen consort, spouse of King Valdemar IV of Denmark. She was the mother of Queen Margaret I of Denmark, Norway and Sweden.
Skjalm Hvide, was the Earl of Zealand in Denmark in the end of the Viking Age (793–1066) and up to his death. Skjalm's father was Toke Trylle, whose father was Slag, based on Absalon, a medieval account scanned, translated and published by Google.
Sweyn died at the royal estate Søderup in [the Duchy of] Schleswig April 28, 1076 (the Danish annals have, certainly incorrect, 1074) and was buried in Roskilde Cathedral. [S. døde paa Kongsgaarden i Søderup i Slesvig 28. April 1076 (de danske Aarbøger have, sikkert urigtig, 1074) og blev begravet i Roskilde Domkirke.]
At Vilhelm er død før Kongen, meddeles af de ikke meget senere Skribenter Anonymus Roskild. (Lgb.I. S. 378) og Ætnothus (Lgb.III. S. 338). At fremdeles Svend Estridsen døde 1076 og ikke allerede 1074, er ligeledes hævet over enhver Tvivl; naar nu ikke destomindre en hel Række Kildeskrifter lader ham dø allerede 1074, saa synes dette at hænge sammen med det allerede tidlig opstaaede og hos Saxo opbevarede Sagn om, at Vilhelm døde faa Dage efter Kongen og af Sorg over hans Død. Det kan da tænkes , at man har draget Kongens Død tilbage til Bispens Dødsaar 1074, ligesom Nyere (t. Ex. Molbech, hist. Aarb. III S. 19) drage Bispens Dødsaar frem til 1076 for at faa Begges Dødsaar til at falde sammen." ... & ... "men derimod giver en ny Skrivelse, som Paven afsendte til Svend d. 17. April s. A. , En det bestemte Indtryk, at der i Mellemtiden er foregaaet Noget, hvorved Svend har gjort sig Paven forbunden