When copying data from this family tree, please include a reference to the origin: Gilbert Gerarda Jan Hoppenbrouwers, "Genealogy Hoppenbrouwers", database, Genealogy Online (https://www.genealogieonline.nl/genealogy-hoppenbrouwers/I2292.php : accessed June 3, 2023), "Olaf Bjornsson King of Uppsala (900-????)".
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