• Kelsey Henson is a Canadian fitness influencer, model and Instagram personality, married to Hafþór Björnsson, an Icelandic actor from HBO's "Game of Thrones".
• She has a BA in business management and certificates in Occupational Health & Safety and HSA (Health & Safety Administrator).
• She has a variety of sponsorships and commercial contracts, and advertises food supplements, and sports complex vitamins sets.
• She is the face of her husband’s gym, “Thor’s Power Gym”, and they promote their own apparel line “Thor’s Power” and appeared in an ad for SodaStream.
• She has a net worth of $850,000 and her husband has over $2 million.

Kelsey Henson has recently been found to be the wife of Hafþór Björnsson, the actor from HBO’s “Game of Thrones”, who played Ser Gregor “The Mountain” Clegane in the fourth, latest season of the show. She is a fitness influencer, model and Instagram personality.

Early life and family

Kelsey Morgan Hanson was born under the zodiac sign of Pisces on 5 March 1990, in Edmonton, Alberta, Canada, so holding Canadian nationality. She spent her childhood living with her father and mother and two sisters Kathleen and Lindsey. She now has a niece named Nikyla Jane, with who she likes to spend her spare time. Since her early years, Kelsey has liked various kinds of sports, and played volleyball and football (soccer) when at school. Her sports experience helped her enter the profession of a fitness influencer and personal trainer.

Educational background

After matriculating from her local high school in Edmonton in 2008, Kelsey entered the University of Alberta, graduating with a BA in business management in 2012. She then realised that she would rather go into the health and fitness field, and in 2014 obtained her certificate in Occupational Health & Safety.


First steps

Even though Kelsey had a good education, initially she couldn’t find work in the sphere of sports and health, so she started as a waitress in various local cafes and restaurants in the evenings and on weekends, while having a full-time job of a financial services representative.

She also had the experience of working as a project administrator for several months, in the position of a junior safety adviser for the Suncor Base Plant, an integrated energy company located in Fort McMurray, Canada. She worked for some time in the position of a building operator in Guthrie Mechanical Services Ltd, and acquired the NCSO (National Construction Safety Officer) certificate along with another one, HSA (Health & Safety Administrator), through the Alberta Construction Safety Association. Until the end of 2017 Kelsey worked in the Tervita Corporation, also having extra working hours at Earls Kitchen Restaurant, where she was a waitress.

Kelsey Henson

Instagram Sponsorship and Commercial Contracts

After becoming the wife of the famous strongman Hafþór Björnsson, Kelsey focused on her fitness career, obtaining commercial contracts and sponsorships from various sports apparel companies. She also advertises food supplements and special sports complex vitamins sets. She’s also the face of her husband’s gym, “Thor’s Power Gym”, and along with her husband, she promotes their own apparel line “Thor’s Power”. The couple also appeared together in the ads of SodaStream, a company which produces water filters and carbonated water for baths and homes. Hafþór appeared in the ads almost naked, sitting in the bathtub (barely fitting in) filled with water and soap bubbles, saying his girlfriend Kelsey likes carbonated water, so he asked SodaStream to provide him a full bathtub of it.

Personal life, husband Hafþór Júlíus “Thor” “The Mountain” Björnsson

Kelsey met Hafþór in her native town, when her future husband came to participate in the “Strongman” competition. After his training he visited a local restaurant, and met Kelsey – they exchanged numbers after she served him dinner, and the couple started dating. Hafþór announced on his Instagram account that they married on 21 October 2018. While nothing is known about Kelsey’s previous affairs and relationships, Hafþór had been in a romance with Thelma Björk Steimann, who gave birth to their daughter, Theresa Líf. Thelma is a fashion knitwear designer, and Hafþór sometimes shares photos of his daughter dressed in the clothes her mother made for her.

Thelma dated Hafþór for two years, starting the relationship when she was only 17 years old, while Hafþór was 18. After that he also dated Andrea Sif Jónsdóttir, a girl from Reykjavik he met in the gym.

Who is Hafþór Júlíus Björnsson?

Hafþór Júlíus Björnsson was born on 26 November 1988, in Reykjavík, Iceland, to his parents Björn and Ragnheiður. Both of his parents are very tall – his father is 6ft 8ins (2.03m) tall and his mother is of similar height; his grandfather Reynir was also almost 7ft (2.07m) tall. Hafþór spent his childhood on the family farm near Reykjavík, helping his parents there. While in high school, in 2004 he started playing basketball, in the team Breiðablik in Division I, then in 2005 he moved to FSu (Körfuknattleiksfélag Selfoss).

Getting to the Premier League in 2008, he badly injured his ankle, and it appeared that he played around 10 games with his leg broken. It was then when he started his bodybuilding and strongman career. Hafþór managed to win several titles in one year, including Europe’s Strongest Man, the Arnold Strongman Classic, and World’s Strongest Man.

Acting career and appearing in “Game of Thrones”

Hafþór has also developed his acting career, appearing in such movies as “Born Strong” (2017) and “Kickboxer: Retaliation” (2018). However, his most notable role was as Ser Gregor “The Mountain” Clegane in the super-popular series “Game of Thrones” by HBO. He started participating in the series from the fourth season; the role of Gregor was earlier played by actors of similar height – Conan Stevens and Ian Whyte.

Hafþór Júlíus

Playing the personal guardian of Queen Cersei, Hafþór inherited his on-screen nickname, “The Mountain”, and now uses it in real life. In 2018 Hafþór also landed the role of Big John from the Icelandic Viking Squad in the movie “Operation Ragnarök”, and appeared as Frank in “Hamlet Pheroun” (2019). Hafþór played one of the basketball players in Katy Perry’s music video “Swish Swish”, and then was assigned to the new project “Pharaoh’s War” in 2019. Most recently, he appeared Thorfinrr in “The Northman” in 2022.

Controversies around domestic violence

In 2017 Hafþór’s ex-girlfriend, Thelma accused him of physical, sexual and emotional violence which took place during their two-year-long relationship. Hafþór denied all accusations, though Thelma didn’t let him see or visit their daughter, Theresa Líf, keeping her in Copenhagen, Denmark, where they now live.

She kept silent about the facts of domestic violence to avoid attracting attention to herself, but decided to reveal the truth about his behavior when she found out she was not the only one who suffered from him: ‘His fame should not stop people from knowing the truth. It’s terrible to learn how he has been treating other girls and women who he has been seeing, since I think they all have a very similar story to tell’, she shared in her interview with Iceland Magazine in 2017.  It is worth mentioning that Andrea Sif Jónsdóttir, Hafþór’s ex-girlfriend he had an affair with in 2016, also accused him of multiple cases of domestic violence. Andrea and Hafþór even had a battle for custody of their Pomeranian puppy the couple bought together during their relationship.

Hobbies, favorite things and interesting facts

Along with her passion for sports, Kelsey likes baking, though she admitted she baked cookies only for Christmas, as she didn’t want that kind of temptation in her life. Kelsey enjoys traveling very much, and often goes on vacations with her husband around the world; the couple have already visited Egypt, Dubai, and Blue Lagoon in Iceland. Kelsey also accompanies her husband to every competition he participates in. Kelsey and Hafþór are good friends with the family of Kristofer Hivju, the actor who played Tormund in “Games of Thrones”; they often appear with Kristofer and his wife Gry Molvær at various parties and events.

Social media presence

Kelsey is a social media personality and a fitness influencer, so her Instagram account helps her to benefit from her online fitness career.

Her husband is also very active on social media and often shares their mutual photos from their own gym, “Thor’s Power”, on his Instagram account of 2.7 million subscribers.

Appearance, multiple tattoos

Kelsey has very long blonde hair and blue eyes. She is 5ft 2ins (1.58m) tall, weighs around 115lbs (51kgs), and her vital statistics are 35-24-36. Just as her husband, Kelsey has many tattoos all over her body – her most recent is a portrait of Princess Leia played by Carrie Fisher in “Star Wars”, located on her bicep. Kelsey shared it was a whole-sleeve “Star Wars” themed project.

Net worth and salary

Kelsey is reported to have accumulated a net worth estimated at $850,000, while her husband, Hafþór Júlíus Björnsson, is reported to have over $2 million, as of mid-2024.

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As a Freelance Writer at Biography Pedia, I oversee the full writing process, from in-depth research to the development of compelling narratives, ensuring accuracy and excellence in our output. Our goal is to produce insightful profiles that deeply explore the lives of prominent figures in business, entertainment, and other fields. Through meticulous research and engaging storytelling, we spotlight the significant journeys and achievements of individuals who captivate and inspire our readers.

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