In two instances Kirkeby says that King Erik was the nephew of Queen Margrete and in another place he correctly states that he was the grandson of the Queen's sister.
Ordinarily, Olav Bukk's father's name is correctly spelled Markvard but in a couple of places it is spelled incorrectly.
In the quote from Historian Hasund, Sigrid Galle is called fru whereas in all other places in Kirkeby she is called hustru. Evidently Hasund also spelled Olav Bukk's last name as Buk.
When referring to Hallvard Torbjørnsson's mother, the author incorrectly says that her mother was hustru Elin of Asdal in Agder when in reality he should have written that his, that is, Hallvard's mother was Hustru Elin - see chart.
Harald Winge has supplied the missing numbers for some of the DN citations, etc.