Last updated on: July 30, 2025
Theresa Líf is Hafthor Bjornsson’s eldest child, the Icelandic strongman and actor. He was popularly known for his role as “The Mountain” in Game of Thrones. Theresa was born in 2009. She is the product of Hafthor and his former girlfriend, Thelma Björk Steimann.
She does not reside with Hafthor. She resides with her mother in Denmark. Theresa is not under the limelight. She does not have a social media presence, and little is known about her life. Things are kept under wraps by her parents to keep her safe.
Quick Facts About Theresa Líf
| Full Name | Theresa Líf |
| Birthdate | 2009 |
| Occupation | Student |
| Husband/Wife | Not Married |
| Education | Studying in Denmark |
| Age | 17 years old |
| Parents | Hafthor Bjornsson (father), Thelma Björk Steimann (mother) |
| Siblings | Stormur Magni Hafthorsson (half-brother), Grace Morgan Hafthorsdottir (late half-sister) |
| Children | None |
| Net Worth | <$1 million |
Life With Her Mother
Since Hafthor and Thelma split, Theresa remained with her mother. They reside in Denmark, out of the public spotlight. Theresa shared most of her life with her mother while growing up.
Hafthor struggled to visit her for a couple of years. There were custody and travel issues. At one time, he stated that he could not see her for nearly three years. But he never lost contact. He ensured he called her every Sunday. He stated those calls were the highlight of his week.
Now everything is fine. Hafthor sees her frequently and has a good relationship with his daughter.
Her Father’s New Family
Hafthor got married to Kelsey Henson, a Canadian health and fitness professional, in 2018. They have a son, Stormur Magni Hafthorsson. He was born on September 26, 2020.
In November 2023, the pair welcomed a daughter named Grace Morgan Hafthorsdottir. Unfortunately, Grace was delivered stillborn at slightly more than 21 weeks. It was a somber time for the family. Hafthor and Kelsey let their fans in on their misery.
Theresa has a half-sister and a half-brother. Though they reside in different locations, they all form part of Hafthor’s life.
Theresa’s Family Background
Theresa has a loving family. Her father, Hafthor, is a former strongman champion and TV personality. Her mother, Thelma, keeps out of the limelight.
Her grandparents are:
Bjorn Thor Reynisson (Grandfather)
Ragnheidur Margret Juliusdottir (Grandmother)
She also has two aunts:
Hafdis Lind Björnsdóttir
Bryndís Björg Björnsdóttir
Theresa has a strong Icelandic family. Most of her family members are famous in Iceland, particularly her father.
A Quiet and Private Life
Theresa isn’t seen in public much. She has no public pictures or interviews. Her family wants to keep her private life private. She is still a little girl and doesn’t work in the entertainment industry.
She probably thinks about school and regular life. She has no information available about her hobbies or interests, and that’s fine. Not everyone must be in the spotlight.
READ ALSO: Hafthor Bjornsson Net worth, Age, Wife, Family, Facts & More
What Hafthor States About Her
Hafthor has reiterated numerous times that being a dad is everything to him. He has explained how difficult it was to be away from Theresa when she was young. But now, he grabs every second with her.
He once stated that success was more than coming out on top at competitions. It’s also about being a good dad. He has made efforts to be there for all of his kids.
