The Shocking Truth: How Old Was Lyanna Mormont When She Died? (Plus Bella Ramsey’s Real Age In 2025)

Lyanna Mormont, the fierce Lady of Bear Island, captured the hearts of *Game of Thrones* fans with her unparalleled bravery and cutting wit, despite her diminutive size. Her character became an instant icon, challenging the established power structure of Westeros with a series of memorable, powerful speeches. The central question that still drives curiosity among fans in December 2025 is: exactly how old was this formidable young leader during her most pivotal moments, and what is the current age of the breakout star who played her, Bella Ramsey? The answer reveals a shocking contrast between the character's maturity and her actual years. The character's age is a crucial detail that amplifies her impact, as she demonstrated the leadership of a seasoned veteran while barely being a teenager. Her story arc, from a skeptical child ruler to a heroic casualty of the Great War, is one of the show's most compelling side narratives.

Bella Ramsey: The Actress Behind the Lady of Bear Island

The unforgettable performance of Lyanna Mormont was delivered by the immensely talented English actor, Bella Ramsey. Their portrayal was so convincing that it launched them into global stardom, ultimately leading to their critically acclaimed lead role in HBO's *The Last of Us*.

Bella Ramsey: Biography and Profile (Updated 2025)

• Full Name: Isabella May Ramsey
• Date of Birth: September 25, 2003
• Birthplace: Nottingham, England
• Current Age (as of December 2025): 22 years old
• Height: Approximately 5'1" (155 cm)
• Notable Roles: Lyanna Mormont in *Game of Thrones* (2016–2019), Mildred Hubble in *The Worst Witch* (2017–2020), and Ellie in *The Last of Us* (2023–present)
• Career Highlight: Winning a BAFTA for their role as Ellie in *The Last of Us*.
• Personal Life: Ramsey uses they/them pronouns and has been an outspoken advocate for non-binary and gender-fluid identities.

When Bella Ramsey first appeared as Lyanna Mormont in *Game of Thrones* Season 6, they were only about 12 years old, making their on-screen gravitas all the more impressive. Their quick rise to fame is a testament to the raw talent first showcased in the unforgiving world of Westeros.

The Shocking Timeline: Lyanna Mormont's Age in *Game of Thrones*

Lyanna Mormont's age is consistently referenced in the series to underscore her remarkable authority and courage. Her youth is not a weakness, but a statement of the fierce spirit of Bear Island and the women of House Mormont.

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1. Lyanna Mormont's Age at First Appearance (Season 6)

Lyanna Mormont is introduced in *Game of Thrones* Season 6, Episode 7, "The Broken Man," when Jon Snow and Sansa Stark visit Bear Island to ask for her house's allegiance. At this point in the show's timeline, Lyanna is explicitly stated to be 10 years old. This detail is crucial, as it explains the initial skepticism of the Northern Lords and makes her subsequent, unwavering support for Jon Snow all the more impactful.

• Character Age: 10 years old
• Key Moment: Giving her famous speech, declaring, "House Mormont remembers. The North remembers. We know no king but the King in the North whose name is Stark."
• Context: She is the Lady of Bear Island following the death of her mother, Maege Mormont, and the exile of her cousin, Ser Jorah Mormont.

2. Lyanna Mormont's Age in the Great War (Season 8)

The final seasons of *Game of Thrones* covered a relatively short period of time. By the time of the devastating Battle of Winterfell in Season 8, Lyanna Mormont had aged slightly. The generally accepted age for the character during the battle where she met her end is 13 years old. This makes her sacrifice one of the most poignant and youthful in the entire series.

The Epic Death of the Lady of Bear Island

Lyanna Mormont's death is arguably one of the most heroic moments in a show filled with legendary battles. Her final stand cemented her legacy as a true warrior of the North, proving her famous quote that she was worth "ten mainlanders."

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Lyanna Mormont’s Final Stand

In the chaos of the Battle of Winterfell, Lyanna refused to hide in the crypts, instead choosing to stand with her men. Her final, awe-inspiring act was against a massive, undead wight giant that breached the walls of Winterfell.

• The Confrontation: The 13-year-old Lyanna charged the giant single-handedly, despite its terrifying size.
• The Sacrifice: The giant picked her up and crushed her in its hand. However, in her last moments, Lyanna plunged a dragonglass dagger into the giant's eye, killing the behemoth and saving countless others.
• The Legacy: Her death at such a young age, in an act of ultimate courage, solidified her status as a legendary figure in the history of Westeros, a true "Giantsbane."

Lyanna Mormont in the *A Song of Ice and Fire* Books

For readers of George R.R. Martin's A Song of Ice and Fire novels, the character of Lyanna Mormont is currently still alive and remains a minor, yet significant, figure.

The Book Timeline

In the most recent published novel, *A Dance with Dragons*, Lyanna Mormont is approximately 10 years old, similar to her age at the start of her arc in the show. She is known for her defiant letter to Stannis Baratheon, where she famously states: "Bear Island knows no king but the King in the North, whose name is Stark."

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• Book Age: Approximately 10 years old
• Current Status: Alive and ruling Bear Island, awaiting the events of the next novel, *The Winds of Winter*.
• Key Difference: Her major role in the Battle of Winterfell does not yet exist in the source material, meaning her fate in the books is still undetermined.

The character of Lyanna Mormont is a powerful example of the strong, independent women who define the North. Her legacy, whether in the books or the show, is one of unwavering loyalty and astonishing bravery, proving that age is merely a number when your heart is as fierce as the bear sigil of her house.