About Niels
Lived 1063 – 1134 (aged 70–71). Niels was a Danish monarch.
Niels ( – 25 June 1134) 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 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 succeeded by Eric II Emune.
Early life Niels was born around 1063, married in 1105, and died in 1134. His parents were King Sweyn II Estridson and an unknown concubine. Four of Niels' brothers ascended the throne before him. He is first mentioned in history in 1086 when he was sent to Flanders to take the place of his exiled brother, King Olaf I. When his brother Eric Evergood died in July 1103 during a pilgrimage, Niels, who was the last surviving brother, was elected king the following year ahead of Evergood's chosen deputy Harald Kesja. He married Margaret Fredkulla, the daughter of Inge I of Sweden. She was believed to have wielded considerable influence during his reign. responsible for tax collection.
Civil war His wife, Margaret, died in 1128 or 1129, After 26 years of internal peace, conflict erupted between Magnus and his cousin Canute Lavard. Canute was popular in the Duchy of Schleswig where he was jarl and was seen as a potential successor to Niels. Niels escaped, while Magnus was slain. Niels sought refuge with Holy Roman Emperor Lothar III of Germany, but did not make it past the city of Schleswig. Niels ventured into the former city of Canute Lavard on 25 June 1134, despite warnings. "Should I fear tanners and shoemakers?," he supposedly remarked. He was greeted by the clergy, but he and his vanguard were slain before they could reach the royal palace as the townspeople turned against him. The almost sixty-year reign of Sweyn II Estridson's sons ended when Niels fell and Eric II Emune became king.
Issue Niels married Margaret Fredkulla, daughter of king Inge I of Sweden. After Margaret's death in either 1128 or 1129, he married Ulvhild Håkansdotter, who had been married to Inge II of Sweden and later married Sverker I of Sweden. Niels had two children with Margaret, and one child out of wedlock.
Inge Nielsen, who died as a child. Magnus Nielsen Ingerid of Denmark was born out of wedlock, and eventually went on to marry Jarl Ubbe Esbernsen, a descendant of Canute the Great.
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Important facts
Family & relationships
People in Niels's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Niels's
Frequently asked questions
Who was Niels?
King of Denmark
When was Niels born?
Niels was born in 1063.
When did Niels die?
Niels died in 1134 in Schleswig.
What was Niels's occupation?
Niels was a monarch.
What nationality was Niels?
Niels was Danish.
Sources & further reading
· DBpedia: Niels, King of Denmark
Cite this page
APA: Biography.guide. (2026). Niels. https://biography.guide/niels/
MLA: "Niels." Biography.guide, https://biography.guide/niels/.
Chicago: "Niels." Biography.guide. https://biography.guide/niels/.
Data last updated: 2026-09-24 · Spot an error? Report a correction.
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