VIKINGS CASTTHE INDEPENDENT FAN GUIDE
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Katheryn Winnick

Katheryn Winnick plays Lagertha in Vikings. Explore the biography, photos and other film and TV roles.

Portrait of Katheryn Winnick

Katheryn Winnick: roles at a glance

Katheryn Winnick plays Lagertha in the original Vikings series.

Selected work beyond Vikings includes Cold Souls, Bones and Big Sky. Explore the biography below for the roles, career context and further references.

Reference: Vikings cast credit.

Biography & career

About Katheryn Winnick

Winnick brings a martial arts background to her work on screen, with black belts in Taekwondo and Karate. She founded three martial arts schools by the age of 21. Her earlier acting work includes Cold Souls and a recurring role in Bones.

The bridge between Winnick’s early martial arts work and Lagertha is physical preparation, but her career is broader than combat. Television roles include the contemporary crime drama Big Sky, in which she plays Jenny Hoyt, while Bones offers an earlier part of her screen career. Watching those roles beside Lagertha brings the emphasis back to the performer’s command of a scene rather than the shield and costume.

What to watch next from Katheryn Winnick

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Selected screen credits

Cold Souls
Bones
Big SkyJenny Hoyt · 2020
Wu AssassinsChristine “C.G.” Gavin · 2019
PolarVivian · 2019
The MarksmanSarah Pennington · 2021

Playing Lagertha: performance & interviews

Watching the performance

Look beyond the shield-wall scenes to the moments when Lagertha has to negotiate respect. Winnick’s stillness and measured delivery make restraint part of the character’s authority. For a different setting, her Jenny Hoyt role in Big Sky moves the performer into a contemporary crime drama.

From self-tape to chemistry read

In her April 2013 Daily Actor interview, Winnick recalled recording an audition at home. Months later, while working in Toronto, she was asked to present a less polished appearance. She rented a costume for that reading, then travelled to Los Angeles for a chemistry read with Fimmel. She remembered departing for Ireland only days after casting. Her account explains the specific audition process rather than reducing her casting to martial arts experience.

Costume, location and character

Winnick told Daily Actor that the character’s appearance, sets and practical surroundings helped her enter the period world. She welcomed battle dirt rather than the polished grooming expected on some contemporary productions. She also described the location work as a chance for cast members to bond, while acknowledging Ireland’s changing weather and the crew’s effort.

Building a shared accent

In a Getty Images junket interview recorded in London in May 2013, Winnick described pre-production as a boot camp combining dialect coaching, battle preparation and stunt training. She said the dialect coach helped establish a shared sound reference so the cast could sound as though they belonged together. The preparation aimed to make those elements available without conscious effort during filming. The accent is a production choice, rather than Winnick’s everyday speech or a proven reconstruction of ninth-century Scandinavian English.

Katheryn Winnick in Vikings

Katheryn Winnick as Lagertha in Vikings
A defining role

Lagertha

Katheryn Winnick portrays Lagertha in Vikings.

Lagertha is a shield-maiden, mother and farmer before she becomes a ruler. Her story repeatedly asks how much independence can survive inside family and political alliances.

Follow the character’s journey, loyalties and place in the wider saga.

Explore Lagertha’s story

Fan questions

Did Katheryn Winnick have martial arts experience before Vikings?

Yes. HISTORY’s cast biography documents Taekwondo and Karate black belts and her experience running martial arts schools.