Håkon the Crazy was a Norwegian earl, and birkebeiner chieftain during the civil war era in Norway. He was born no later than the 1170s and died in 1214. He was the son of Folkvid the Lawspeaker and king Sigurd Munn's bastard daughter Cecilia. His epithet "the Crazy" probably refers to ferociousness in battle. Cecilia had been married off to Folkvid, the lawspeaker in Värmland in Sweden, by her father's enemies after he had been defeated and killed in 1155. Wikipedia
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