Folkenborg
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Folkenborg (sometimes known as Folkinsberg) is a former nobles estate from the 12th-13th century located one mile southeast of Mysen located in Østfold. It is famous for being the site where King Haakon IV of Norway was born.{{Cite book|last=Office|first=Great Britain Public Record|url=https://books.google.com/books?id=xqlEAQAAMAAJ&q=ingi|title=Rerum Britannicarum Medii Aevi Scriptores: Or, Chronicles and Memorials of Great Britain and Ireland During the Middle Ages|date=1894|publisher=H.M. Stationery Office|pages=3|language=en}} In 1225 Haakon stayed here during his war with Värmland which means that it was either a royal property or his own personal property. Since most of the royal property was inherited by Skule Bårdsson it is likely to have been a Patrimony probably from his mother Inga. Despite some spellings as -berg the proper spelling is -borg because berg would imply a mountain but there is none on the site. Instead it is more likely that there was a Borough (Borg) which could range from a walled settlement to a fortified house. Folkenborg is referred to as a "homestead"{{Cite book|last=Office|first=Great Britain Public Record|url=https://books.google.com/books?id=xqlEAQAAMAAJ&q=folkinsberg|title=Rerum Britannicarum Medii Aevi Scriptores: Or, Chronicles and Memorials of Great Britain and Ireland During the Middle Ages|date=1894|publisher=H.M. Stationery Office|pages=105|language=en}} and was thus probably a fortified manor house.
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