Isabella May Ramsey (born September 2003) is an English actor. They are known for their breakout role as young noblewoman Lyanna Mormont in the HBO fantasy television series Game of Thrones (2016–2019), and subsequent television roles as Mildred Hubble in the 2017 CBBC series The Worst Witch, the voice of the title character in the Netflix animated series Hilda (2018–present – as of 2023), and Jane Grey in the 2022 Starz drama Becoming Elizabeth.
They starred in the 2022 historical comedy film Catherine Called Birdy and currently stars as Ellie in the 2023 HBO drama series The Last of Us.
Matilda and the Brave Escape
Narrator
2024
More Flames
Dog
2024
Villain
Georgia
2023
Making of The Last of Us
Self
2023
Hilda and the Mountain King
Hilda (voice)
2021
Monstrous Beauty
Barbara Field
Grounded II: Making The Last of Us Part II
Self (archive footage) (uncredited)
2024
Chicken Run: Dawn of the Nugget
Molly (voice)
2023
Requiem
Evelyn
2021
Sunny Dancer
Ivy
Harmonia
Ella
Girl Next Door
Sherafiyah Lewthwaite
The Last of Us
Ellie Williams · (16 episodes)
2023
Catherine Called Birdy
Birdy
2022
Becoming Elizabeth
Jane Grey · (6 episodes)
2022
Time
Kelsey Morgan · (3 episodes)
2021
3 Minutes of Silence
2020
Resistance
Elsbeth
2020
Turtle Journey: The Crisis in Our Oceans
Daughter Turtle
2020
On the Beaches
Kitty
2019
His Dark Materials
Angelica · (6 episodes)
2019
Judy
Lorna Luft
2019
Zero
Alice
2019
Game of Thrones: The Last Watch
Self
2019
Princess Emmy
Princess Gizana (voice)
2019
Holmes & Watson
Flotsam
2018
Two for Joy
Miranda
2018
Hilda
Hilda (voice) · (34 episodes)
2018
Summer Camp Island
Ramona Age 15 (voice) · (1 episode)
2018
Requiem
Young Matilda · (1 episode)
2018
The Worst Witch
Mildred Hubble · (39 episodes)
2017
The Late Late Show with James Corden
Self - Guest · (1 episode)
2015
The Jonathan Ross Show
Self - Guest · (1 episode)
2011
Game of Thrones
Lyanna Mormont · (9 episodes)
2011
The Graham Norton Show
Self · (1 episode)
2007