Tom Cullen is a Welsh actor and director who has built a career spanning independent film, period drama, and fantasy television. He is best known for his role as Anthony Foyle, Viscount Gillingham in Downton Abbey, and for his work in the acclaimed film Weekend. More recently, he has been cast in House of the Dragon as Ser Luthor Largent, and his professional trajectory continues to draw attention from audiences curious about his personal life, his filmography, and the occasional confusion around his involvement in Game of Thrones.
Born Thomas Cullen on 17 July 1985 in Aberystwyth, Wales, he grew up in a household of writers. His parents were both writers, and one source adds that they had previously worked as actors. He has two siblings, Joseph and Ruth Cullen. After studying at the Royal Welsh College of Music and Drama and the Central School of Speech and Drama, he began taking on professional roles in the late 2000s.
Cullen’s breakout performance came in 2011 with the independent film Weekend, in which he played Russell. The role earned him critical acclaim and an acting award, establishing him as a talent to watch in British cinema. Over the following years, he moved fluidly between film and television, taking on parts in productions such as World Without End, Black Mirror, Knightfall, Gunpowder, The Five, The Gold, and Becoming Elizabeth.
Who is Tom Cullen? – Biography and Background
Thomas Cullen
17 July 1985 (Aberystwyth, Wales)
Downton Abbey, Weekend, Knightfall, House of the Dragon
Welsh actor and director
- Tom Cullen is a Welsh actor and director, best known for his role as Viscount Gillingham in Downton Abbey.
- His breakout role was Russell in the independent film Weekend (2011), which earned him critical recognition and an acting award.
- Cullen has been cast as Ser Luthor Largent in House of the Dragon, a role listed by his agency and reflected in Wikipedia filmography entries.
- Despite common queries, Tom Cullen did not appear in Game of Thrones; this misconception likely stems from his involvement in the spin-off House of the Dragon.
- He was in a long-term relationship with actress Tatiana Maslany, reported to have begun in 2011, with sources differing on whether it ended in 2019 or 2021.
- Cullen’s filmography spans independent films like Weekend and television series such as Knightfall, Becoming Elizabeth, and Downton Abbey.
| Attribute | Details |
|---|---|
| Birth Date | 17 July 1985 |
| Birth Place | Aberystwyth, Wales |
| Education | Royal Welsh College of Music and Drama; Central School of Speech and Drama |
| Occupation | Actor, Director |
| Years Active | 2009–present |
| Notable Roles | Anthony Foyle (Downton Abbey), Russell (Weekend), Sir Landry (Knightfall), Ser Luthor Largent (House of the Dragon) |
| Partner | Tatiana Maslany (relationship reported from 2011; end date varies across sources) |
| Children | No confirmed children found in the provided sources |
Tom Cullen’s Notable Roles: Downton Abbey, The Stand, and House of the Dragon
Anthony Foyle, Viscount Gillingham in Downton Abbey
Cullen played Anthony Foyle, Viscount Gillingham—also referred to as Lord Gillingham—in Downton Abbey from 2013 to 2014, appearing in 12 episodes. The role significantly raised his profile and placed him in one of the most watched period dramas of the decade. He later shared in ensemble recognition for the series, including a Screen Actors Guild Award cited by the German Wikipedia entry. His character was a love interest for Lady Mary Crawley, played by Michelle Dockery.
The Stand: What the Sources Say
Several online searches connect Tom Cullen with the 2020–2021 television adaptation of Stephen King’s The Stand. However, a review of major biographical sources—Wikipedia, IMDb, Rotten Tomatoes, and United Agents—does not list him in the cast for that miniseries. His role in the production remains unconfirmed.
House of the Dragon and the Game of Thrones Confusion
Cullen has been cast as Ser Luthor Largent in House of the Dragon, the prequel to Game of Thrones. His role is listed by his agency, United Agents, and mirrored in Wikipedia filmography entries. This has led some to mistakenly believe he appeared in the original series. He did not appear in Game of Thrones.
Tom Cullen’s Personal Life: Partner and Children
Relationship with Tatiana Maslany
Cullen is known publicly for his long relationship with actress Tatiana Maslany, which began in 2011. Accounts of when the relationship ended vary, with some sources indicating 2019 and others noting 2021.
Children: No Confirmed Information
There is no public confirmation or official record indicating that Tom Cullen has children, despite widely circulated reports on the matter. Official biographies and interviews do not address the topic.
Claims about Tom Cullen having children or being married to Tatiana Maslany remain unconfirmed. Official interviews or verified biographical sources are recommended for precise personal details about the actor.
Complete Filmography and TV Appearances of Tom Cullen
Film
- Weekend (2011) — Russell
- The Last Days on Mars — listed among notable films
Television
- Black Mirror (2011) — episode role opposite Toby Kebbell
- World Without End (2012) — series role
- Downton Abbey (2013–2014) — Anthony Foyle, Viscount Gillingham / Lord Gillingham (12 episodes)
- The Five — supporting role
- Gunpowder — Guy Fawkes
- Knightfall — Sir Landry
- Becoming Elizabeth — Thomas Seymour
- House of the Dragon — Ser Luthor Largent (upcoming / announced)
For a full list of credits, sources such as Rotten Tomatoes and IMDb provide comprehensive filmographies. Another British actor with a similarly varied career across television and film is Faye Marsay.
What Is Tom Cullen’s Career Timeline?
- 1985 — Born in Aberystwyth, Wales
- 2009 — First credited acting role
- 2011 — Starred in the independent film Weekend
- 2013–2014 — Played Viscount Gillingham in Downton Abbey
- 2017 — Cast in Knightfall as Sir Landry
- 2022 — Appeared in Becoming Elizabeth as Thomas Seymour
- 2024 — Cast as Ser Luthor Largent in House of the Dragon; currently filming Walk The Blue Fields and The Party series
Sources for this timeline include Wikipedia, United Agents, and Rotten Tomatoes.
Was Tom Cullen in Game of Thrones? And Other Uncertainties
| Established Information | Information That Remains Unclear |
|---|---|
| Tom Cullen was born on 17 July 1985 in Aberystwyth, Wales. | Whether he appeared in The Stand (2020–2021) is not confirmed by major sources. |
| He played Anthony Foyle, Viscount Gillingham in Downton Abbey from 2013 to 2014. | His relationship with Tatiana Maslany is confirmed, but the end date varies: some sources say 2019, others say 2021. |
| He has been cast as Ser Luthor Largent in House of the Dragon. | Whether Tom Cullen has children is not confirmed by any of the primary sources. |
| He did not appear in Game of Thrones. | — |
What Is Tom Cullen’s Background and Career Context?
Tom Cullen’s career trajectory from independent film to major television series demonstrates a versatile approach to acting and directing. His role in Weekend (2011) garnered critical acclaim and helped establish his reputation in LGBT cinema. The film, which follows a brief but intense relationship between two men in Nottingham, was praised for its naturalistic performances and honest storytelling.
His move into period drama with Downton Abbey introduced him to a global audience, and subsequent roles in historical productions such as Knightfall, Gunpowder, and Becoming Elizabeth cemented his reputation as a reliable presence in prestige television. The confusion between House of the Dragon and Game of Thrones highlights the need for precise role attribution, especially when actors move between connected franchises.
Cullen is also a director, though most sources focus primarily on his acting work. His agency profile at United Agents lists his current and upcoming projects, including the screen adaptation of Walk The Blue Fields and the series The Party.
Where Can I Find Reliable Information About Tom Cullen?
“Thomas Cullen is a Welsh actor and director.”
— Wikipedia snippet
“Welsh. Pretender. Piano basher. Former Guinness lover.”
— Tom Cullen’s Instagram biography
“Tom is currently filming on the screen adaptation of ‘Walk The Blue Fields’.”
— United Agents profile
For biographical details, filmography, and career updates, the most reliable sources include Wikipedia, IMDb, and Rotten Tomatoes. His official social media presence is on Instagram, and his professional representation is handled by United Agents.
Who Is Tom Cullen in Summary?
Tom Cullen is a Welsh actor and director, born in 1985 in Aberystwyth, who rose to prominence through his breakout role in the independent film Weekend and later gained international recognition as Viscount Gillingham in Downton Abbey. His career spans television series such as Knightfall, Becoming Elizabeth, and the upcoming House of the Dragon, where he will play Ser Luthor Largent. He was in a long-term relationship with actress Tatiana Maslany, and information about children remains unconfirmed. His work continues to draw interest from audiences across period drama, fantasy, and independent cinema.
Frequently Asked Questions About Tom Cullen
What is Tom Cullen’s real name?
His full name is Thomas Cullen.
How old is Tom Cullen?
He was born on 17 July 1985, making him 39 years old as of 2025.
Where was Tom Cullen born?
Aberystwyth, Wales.
Does Tom Cullen have a Wikipedia page?
Yes, it provides a comprehensive biography and filmography.
Is Tom Cullen on Instagram?
Yes, his handle is @tom_cullen.
Was Tom Cullen in Game of Thrones?
No. He has never appeared in Game of Thrones. His role in House of the Dragon, a spin-off, may cause confusion.
Who is Tom Cullen’s partner?
He was in a long-term relationship with actress Tatiana Maslany, reported to have begun in 2011. Sources differ on whether the relationship ended in 2019 or 2021.
Does Tom Cullen have children?
No confirmed information about children was found in the provided sources.
What is Tom Cullen’s role in House of the Dragon?
He has been cast as Ser Luthor Largent in the series.
What was Tom Cullen’s breakout role?
His breakout role was Russell in the independent film Weekend (2011), which earned him critical acclaim and an acting award.
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Isabelle Knight is TV & Streaming Editor at StoryNative.uk, covering television, streaming platforms, broadcast schedules and platform news.