Alys Karstark (Earth-6120)

Lady Alys Karstark was the daughter of Lord Harald Karstark and the new head of House Karstark after the death of her father at the Battle of the Bastards, who fought for House Bolton. She pledged her house to House Stark once again when called upon by King Jon Snow. She died protecting Bran Stark during the Battle of Winterfell.

Source

 * https://gameofthrones.fandom.com/wiki/Alys_Karstark