Eric I, Duke of Schleswig

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The seal of Eric I, the first known example of the coat of arms of Schleswig.
Danish Royalty
House of Estridsen
National Coat of arms of Denmark no crown.svg
Valdemar III, Duke of Schleswig
Sophia, Princess of Anhalt-Bernburg
Eric I, Duke of Schleswig
Abel, Lord of Langeland
Margaret, Countess of Schwerin
Valdemar IV, Duke of Schleswig
Eric Longbone, Lord of Langeland
Margaret, Abbess of Zarrentin
Great Grandchildren
Eric II, Duke of Schleswig
Great-Great Grandchildren
Valdemar III
Helvig, Queen of Denmark

Eric I Abelsøn (Danish: Erik 1. Abelsøn af Danmark) (died 27 May 1272) was a Danish nobleman. He was the ruling Duke of Schleswig from 1260 until his death in 1272. He was the second son of King Abel of Denmark, Duke of Schleswig and Mechtild of Holstein.

Early life[edit]

After the death of his elder brother Duke Valdemar III in 1257, Eric inherited the claim to the Duchy of Schleswig. However, his uncle and potential feudal overlord King Christopher I of Denmark refused to install him as duke.

Subsequently, Eric participated in the coalition of Bishop Peder Bang of Roskilde and Prince Jaromar II of Rugia against King Christopher. He took part in the military campaign of 1259 which resulted in the conquest of Copenhagen.

Duke of Schleswig[edit]

After the death of Christopher in 1259, he was created Duke of Schleswig by the new king Eric V in 1260.

Already the following year, fighting with the king broke out anew. The Queen Dowager, Margaret Sambiria, acting as regent for her under age son, feared aggression from the Duke. However, Duke Eric was able to defeat the royal army at the Battle of Lohede and capture the young King Eric and his mother. As a result, he was able to obtain huge advantages for his duchy at the subsequent treaty in 1264.

In 1268, he acquired Gottorp Castle from Bishop Bonde of Schleswig, who then moved his residence to Schwabstedt.

Duke Eric died 27 May 1272.

Marriage and issue[edit]

Eric married Margaret of Rugia, a daughter of Jaromar II, Prince of Rugia in 1259 or 1260. They had the following children:


Eric I, Duke of Schleswig
Born: ca. 1242 Died: 27 May 1272
Regnal titles
Preceded by
Valdemar III
Duke of Schleswig
Succeeded by
Valdemar IV