However, during the schism between Pope Alexander III and Antipope Victor IV, Absalon stayed loyal to Valdemar even as he joined the Holy Roman Emperor Frederick Barberossa in supporting Victor IV.

The union was the work of Queen Margaret I of Denmark ( 1353 – 1412 ), a daughter of King Valdemar IV of Denmark.

In 1346, after St. George's Night Uprising the Order bought the rest of Estonia from King Valdemar IV of Denmark.

After his death, his canonization was demanded by King Valdemar IV of Denmark and promised by his successor, Pope Gregory XI, as early as 1375, but this did not take place owing to the disorders of the time.

** King Valdemar IV of Denmark ( d. 1375 )

* July 27 – Battle of Visby: King Valdemar IV of Denmark defeats a peasant army.

* October – Margaret I of Denmark becomes Regent of Denmark after the death of her father Valdemar IV.

* October 24 – King Valdemar IV of Denmark

* May 3 – Olav IV Haakonsson is elected King Oluf II of Denmark, following the death of his grandfather, Valdemar IV, in 1375.

Margaret, the queen mother, who was the oldest daughter of King Valdemar IV of Denmark, succeeded in uniting Norway with Denmark, Norway and Sweden under the Kalmar Union.

His mother was Queen Margaret I of Denmark which made him the grandson of King Valdemar IV of Denmark.

When his grandfather Valdemar IV of Denmark died, Olaf was just five years old.

In the charter Olaf agreed to meet with the Danehof at least once a year and return properties his grandfather Valdemar IV had confiscated during his reign.

Ingeborg was a daughter of Valdemar IV of Denmark and his Queen consort Heilwig of Schleswig.

Initially named Boguslaw, he was son to the only surviving granddaughter of Valdemar IV of Denmark and also a descendant of Magnus III of Sweden and Haakon V of Norway.

The results of this policy of balance were still not reached when he suddenly died as the last descendant of Valdemar IV of Denmark.

After the initial defeat, Valdemar IV of Denmark intervened on Magnus ' and Haakon's behalf, and Valdemar's forces were joined by Swedish peasants who supported Magnus.

By the time of King Valdemar IV ( Valdemar Atterdag, 1340-1375 ), the castle had nine towers and a defensive wall 800 metres long.

The castle was the birthplace of Queen Margaret I of Denmark, daughter of Valdemar IV, in 1353.

King Valdemar IV of Denmark conquered Scania in 1360.

In 1359 the young Princess Margaret of Denmark, the daughter of the Danish King Valdemar IV, was bethroted to Haakon in a marriage contract intended to be a part of a larger alliance treaty between Magnus and Valdemar.

He was the foremost politician and churchfather of Denmark in the second half of the 12th century, and was the closest advisor of King Valdemar I of Denmark.

He grew up at the castle of his father, and was brought up alongside his older brother Esbern Snare and the young prince Valdemar, who later became King Valdemar I of Denmark.

The pirates had raided the Danish coasts during the civil war of Sweyn III, Canute V, and Valdemar, to the point where at the accession of Valdemar one-third of Denmark lay wasted and depopulated.

He even advocated forgiving the earlier enemies of Valdemar, which helped stabilize Denmark internally.

When Valdemar returned to Denmark, he was convinced into strengthening the Danevirke fortifications at the German border, with the support of Absalon.

Since King Valdemar II of Denmark was married to the Portuguese princess, Berengária of Portugal, it is not unthinkable that the origin of the story, if not the flag, was the Spanish tale or a similar tale, which again might have been inspired by an even older legend.

The national Coat of Arms of Estonia, three blue lions on a golden shield, is almost identical to the Coat of Arms of Denmark, and its origin can be traced directly back to King Valdemar II and Danish rule in Estonia 1219-1346.

He had accompanied as canon Diego de Acebo, Bishop of Osma on a diplomatic mission to Denmark, to arrange the marriage between the son of King Alfonso VIII of Castile and a niece of King Valdemar II of Denmark.

Valdemar II of Denmark raided and occupied Hamburg in 1201 and in 1214.

* Day of Valdemar and Reunion day ( Flag Day ) ( Denmark )

In 1218, Albert asked King Valdemar II of Denmark for assistance, but Valdemar instead arranged a deal with the Brotherhood and conquered the north of Estonia for Denmark.

While the Swedes made only one failed foray into western Estonia in 1220, the Danish Fleet headed by King Valdemar II of Denmark had landed at the Estonian town of Lindanisse ( present-day Tallinn ) in 1219.

Although the Curonians had attacked Riga in 1201 and 1210, Albert of Buxhoeveden, considering Courland a tributary of Valdemar II of Denmark, had been reluctant to conduct a large scale campaign against them.

On 15 August 1193, he married Ingeborg ( 1175 – 1236 ), daughter of King Valdemar I of Denmark ( ruled 1157 – 82 ).

When Valdemar died in 1182, his son succeeded him as Canute VI, and Absalon served as Canute VI's counsellor.

* February – After the death of Erik Eriksson on February 2, Valdemar I, who is the eldest son of Birger jarl, is elected king of Sweden and becomes the first Swedish king of the Folkung house.

After one of them was assassinated in 1340, Christopher's son Valdemar was chosen as king, and gradually began to recover the pawned territories, which was completed in 1360.

Saxo's chronology of kings extends up to Saint Canute and his son Valdemar I.

* Skuli Tostisson Kongsfostre ( born 1052 )-Whose great-great-granddaughter Helena Guttormsdotter was the mistress of Valdemar II of Denmark and mother of Valdemar's son Canute, Duke of Reval.

It was started by Valdemar the Great, and continued by his son Valdemar the Victorious.

On King Eric's death in 1250, Birger's son Valdemar was elected as the new king while Birger acted as regent, holding the true power in Sweden until his death.

It was presumed that Valdemar would assist Magnus in the aforementioned rebellion, started by his eldest son Eric, by invading the province of Scania, which had been pawned by King Christopher II of Denmark before his death in 1332 to Magnus and had been under Swedish rule since.

However, Haakon would gain a renewed interest in Danish affairs when the opportunity to have his son elected as the King of Denmark arose upon the death of Valdemar in 1375.

As Valdemar left no immediate clear successor to the throne, two candidates were put forward for the election: Haakon and Margaret appointed their only son, Olav, as a claimant to the throne.

In opposition to this, Henry of Mecklenburg ( the son of Duke Albert II of Mecklenburg ) and Ingeborg of Denmark ( another daughter of Valdemar ) in turn appointed their son, Albrecht, as a rival claimant.

In 1223, King Valdemar and his eldest son were abducted by count Henry I, Count of Schwerin ( also known as Heinrich der Schwarze ), and held captive in Castle Dannenberg for several years.

King Valdemar II, who had retained the former imperial March north of the Eider, in 1232 erected Schleswig as a duchy for his second son, Abel.

Duke Valdemar V of Slesvig's son, Henry, was in 1364 nominally entfeoffed with the Duchy, although he never reached to regain more than the northernmost parts as he couldn't raise the necessary funds to repay the loans.

Southern parts of Schleswig had been mortgaged to several German nobles by Duke Henry I, Duke of Schleswig ( d. 1375, a son of the former king Valdemar III of Denmark ), the last duke of that line.

In 1386, Queen Margaret I of Denmark, younger daughter of Valdemar IV of Denmark and Helvig of Schleswig, granted Schleswig as a hereditary fief under the Danish crown to Count Gerhard VI of Holstein-Rendsburg, grandson of Gerhard III, provided that he swore allegiance to her son King Oluf, although Schleswig actually still was held autonomously by the Count of Holstein-Rendsburg.

Valdemar was the son of princess Ingeborg Eriksdotter of Sweden and Birger Jarl, from the House of Bjelbo.

Eric was the son of King Erik X of Sweden and Rikissa of Denmark, the daughter of King Valdemar I of Denmark.

Their under aged eldest son Valdemar was elected king 1250 to succeed Eric, possibly by-passing the sons, if such existed, of Ingeborg's elder sisters.

After this decision, both Knud V and Valdemar Knudsson ( son of Knud Lavard, the enemy of his own father Magnus ) rebelled against Sweyn III, who was expelled in 1154: Knud V and Valdemar became co-kings of Denmark.