Eric IV (1216 –
August 9,
1250), also known as Plovpenning, was king of
Denmark from 1241 until his death. He was the son of
Valdemar II by his wife,
Princess Berengária of Portugal, and brother to
Abel and
Christopher I.Eric was coruler with his father from 1232. His short rule was marked by bitter conflicts and civil wars against his brothers. Especially he fought his brother Abel, Duke of Schleswig who seems to have wanted an independent position and who was supported by the counts of Holstein. Eric also fought the
Scanian peasants, who rebelled because of his hard taxes, among other things, on ploughs. This gave him his epithet "ploughmoney",
Danish, Plovpenning).
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