The Obotrites (Latin: Obotriti, Abodritorum,Abodritos…) or Obodrites, also spelled Abodrites (German: Abodriten), were a confederation of medieval West Slavic tribes within the territory of modern Mecklenburg and Holstein in northern Germany.
https://en.wikipedia.org/wiki/Obotrites
I guess someone made a name out of it, but surely, who was named Obobrit?
Then there is a mistake in this profile also, Olof Björnsson comparing the about me in English with Swedish, suggest that someone have made a mistake.
List
Erik Björnsson, King of the Swedes
his son Björn på Håga, Sveakung
his son Olof Björnsson
There are two different Björn Eriksson, lived ca.100 years apart, both had a son named Olof
1 https://en.wikipedia.org/wiki/Bj%C3%B6rn_at_Haugi
2 https://en.wikipedia.org/wiki/Bj%C3%B6rn_Eriksson
Someone have taken this Olof Björnsson and given him the info in the about me section for the younger Björn Eriksson instead from the older Björn på Håga.
https://en.m.wikipedia.org/wiki/Olof_Bj%C3%B6rnsson
his brother
Eric the Victorious, king of Sweden