Dacey Mormont, Lady Maege's eldest daughter and heir to Bear Island, was a lanky six-footer who had been given a morningstar at an age when most girls were given dolls. "I have fought beside the Young Wolf in every battle, He has not lost one yet.
Dacey Mormont is the eldest of Maege's five daughters and a proud warrior in her own right. She serves as one of Robb Stark's personal guard throughout the War of the Five Kings. -- Game of Thrones Wiki
Dacey Mormont is the heir of House Mormont. She is the daughter of Maege Mormont, Lady of Bear Island, and is the niece of Jeor Mormont, Lord Commander of the Night's Watch. Dacey "fought beside the Young Wolf every battle, and he has not lost one".
Dacey Mormont: She-Bear: “there’s a carving on our gate,” said dacey. “a woman in a bearskin, with a child in one arm suckling at her breast. in the other hand she holds a battleaxe. she’s no proper lady, that one, but i always loved her.