This article is written from a real world point of view and so is not considered part of The Worst Witch universe.

Bella Ramsey

Birth Name

Isabella May Ramsey

Date of Birth

September 30, 2003

Place of Birth

Nottingham, Nottinghamshire, England, UK



Years Active



Mildred Hubble

Isabella "Bella" May Ramsey (born September 30, 2003) is a British child actress. She made her professional acting debut as the young noblewoman Lyanna Mormont in the HBO fantasy television series Game of Thrones. Ramsey plays the title character, Mildred Hubble in the 2017 TV adaptation of the The Worst Witch books. In Feburary of 2020, Ramsey announced on Instagram that she leaving The Worst Witch, Implying that the decision was made for the sake of her mental health. Lydia Page replaced Ramsey as Mildred in season 4.

Bella Ramsey as Lyanna Mormont in Game of Thrones

Since 2016, Ramsey has played Lyanna Mormont in the HBO fantasy drama television series Game of Thrones. The part of Lyanna Mormont is Ramsey's first credited role. After her debut appearance in one scene in the seventh episode of the sixth season of Game of Thrones, fans and critics noted Ramsey as a standout actress for portraying her character's no-nonsense leadership style. This reaction was repeated after her appearance in the season finale, with The Hollywood Reporter calling her "season 6's breakout star". Ramsey will return for the eighth season.

Ramsey starred in 2017 TV adaptation of The Worst Witch books as the titular character, Mildred Hubble, and for which she received a Young Performer award nomination at the 2018 British Academy Children's Awards.

Ramsey is the title character of the 2018 Netflix original series Hilda. She is represented by actor's agency Conway van Gelder Grant.


Year Format Title Role
2016 - 2019 TV Series Game of Thrones Lyanna Mormont
2017 - 2019 The Worst Witch Mildred Hubble
2018 TV mini-series Requiem Young Matilda
Video game Doctor Who Infinity Freya (voice)
TV Series Hilda Hilda (voice)
Film Two For Joy Miranda
Holmes & Watson Flotsam
Short Zero Alice
2019 Film Princess Emmy Princess Gizana (voice)
Judy Lorna Luft
Unknown Resistance Elsbeth
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