Sune Sik Sverkersson
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Sune Sik Sverkersson (born c. 1154) was a Swedish nobleman of contested historicity. Very few written documents have survived from the 12th century in Sweden, and so it is a matter of opinion whether he is purely legendary or not.
According to Olaus Petri, he would have been a younger son of King Sverker I of Sweden, possibly from his marriage with Rikissa of Poland. The same sources position Sune Sik as father of Ingrid Ylva.