Bella Ramsey made her acting debut when she joined the cast in Game Of Thrones, portraying fierce noblewoman Lyanna Mormont in Season 6. With just a few words, “The North remembers,” Ramsey became one of the breakout stars of the fantasy show. Her role on Game of Thrones had consequences in her young life.
https://www.thethings.com/who-is-bella-ramsey-everything-we-know-about-the-last-of-us-star/