In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

This character exchanges her first vows of love at St. Margaret's Festival, and one of this character's friends is killed by Bentein after Bentein sexually harasses this character. This character's brother-in-law is killed after having his arm slashed mediating a bar fight, and she dies along with two of her seven sons after entering a convent. This character's husband is forced to forfeit all of his lands for his part in a conspiracy to overthrow the child king (*) Magnus VII, and she first meets the witch-wife Lady Aashild when she is called upon to help raise her crippled sister Ulvhild. After rejecting her betrothed Simon Andresson, this character, who ultimately contracts the Black Death, marries her true love Erlend Nikulausson, whom she moves with to Husaby. Appearing in The Bridal Wreath, The Wife, and The Cross, for 10 points, name this title character of a trilogy by Sigrid Undset.
Literature