Brendan McAvoy is a British celebrity child best known as the son of acclaimed Scottish actor James McAvoy and award-winning English actress Anne-Marie Duff.
Born into one of Britain’s most celebrated acting families, he grew up sheltered from the public eye while his parents’ careers reached international heights.
Who is Brendan McAvoy?
Brendan McAvoy is the only child of James McAvoy and Anne-Marie Duff, two of Britain’s most respected actors.
His father built a global career through blockbusters like the X-Men franchise and M. Night Shyamalan’s Split, while his mother earned a BAFTA for Best Supporting Actress in 2024 for her role in Bad Sisters on Apple TV+.
Both parents have worked hard to keep Brendan out of the spotlight throughout his childhood.
They rarely speak about him in interviews and have never confirmed details about his schooling or daily life.
His parents also appeared together in the BBC fantasy series His Dark Materials, marking one of the few times they shared screen space after their 2016 divorce.
James McAvoy has said that he and Anne-Marie rarely discussed each other in public during or after their marriage, a policy they extended to Brendan.
Despite being only a teenager, Brendan is one of the most searched celebrity children in the United Kingdom.
Early Life of Brendan McAvoy
Brendan was born on 26 February 2010 at St Mary’s Hospital, Praed Street, Westminster, London.
His birth surprised his parents: they had chosen not to learn the baby’s sex before delivery and had already prepared 15 possible names for a girl. With a son arriving, they quickly settled on a name from close to home.
Anne-Marie named him after her own father, Brendan Duff, a painter and decorator originally from Donegal, Ireland. His maternal grandparents are Brendan Duff and Mary Duff, both from Ireland.
His paternal grandparents are James McAvoy Sr., a former bus driver and builder, and Elizabeth McAvoy, who worked as a psychiatric nurse before her death in 2018.
Brendan grew up in North London, where both parents maintained a shared home for a period after their 2016 separation. That arrangement kept disruption to his life to a minimum.
Brendan McAvoy Age / Birthday
Brendan McAvoy is 16 years old as of 2026, born on 26 February 2010. His zodiac sign is Pisces, a sign often linked with empathy, creativity, and a strong imaginative streak.
At 16, he is currently in his teenage years, raised in the company of two parents with decades of professional acting experience between them.
Brendan McAvoy Ethnicity and Nationality
Brendan holds British nationality. His heritage is a mix of Scottish on his father’s side and Irish on his mother’s side.
Both of his maternal grandparents moved to Britain from Donegal, Ireland, giving Brendan a family background that spans two of the British Isles’ most celebrated acting traditions.
Brendan McAvoy Parents
James McAvoy and Anne-Marie Duff first met in 2003 on the set of the Channel 4 drama Shameless, where Duff played the character Fiona Gallagher and McAvoy played her love interest Steve.
Their on-screen chemistry translated into a real relationship, and they married on 11 November 2006 in a private ceremony at Drumtochty Castle in Aberdeenshire, Scotland.
The couple chose not to know the sex of their baby before Brendan’s birth in February 2010.
They welcomed him at St Mary’s Hospital in Westminster and kept details of his early life almost entirely private.
In May 2016, James and Anne-Marie announced their separation in a joint statement.
They described the decision as made with “tremendous sadness” and expressed a commitment to continued friendship and shared focus on their son’s wellbeing.
Following the split, both parents initially continued to live in the same North London home to minimise disruption to Brendan’s life.
James later moved to Crouch End, not far from the family home. Their co-parenting arrangement has remained amicable by all accounts.
James McAvoy subsequently began a relationship with Lisa Liberati, whom he met on the set of Split in 2016.
Liberati was working as a personal assistant to director M. Night Shyamalan during production.
He confirmed their marriage in 2022 and revealed in 2026 that the couple had quietly welcomed a son together several years earlier.
Anne-Marie Duff has not publicly confirmed any new relationship since the divorce.
Brendan McAvoy Career
Brendan McAvoy has no public career at this time. At 16, he is in the middle of his secondary school years and has not made any public appearances in film, television, or any other professional field.
His parents have kept all details of his education private. Neither James McAvoy nor Anne-Marie Duff have publicly named the school he attends.
No career direction for Brendan has been confirmed by either parent.
James McAvoy’s Career
While Brendan himself has no career to report, his father James McAvoy’s work forms the backdrop of his childhood and public profile.
James began acting in 1995 with a small role in The Near Room. His profile on British television grew through roles in Frank Herbert’s Children of Dune (2003), State of Play (2003), and Shameless (2004-2005).
His film career took off with The Chronicles of Narnia: The Lion, the Witch and the Wardrobe in 2005, where he played the faun Mr Tumnus.
His breakthrough came with The Last King of Scotland (2006) and Atonement (2007), the latter of which earned him a Golden Globe nomination and a second BAFTA nomination.
Both performances established him as a lead actor in prestige cinema.
From 2011 onward, he took on the role of young Professor Charles Xavier in the X-Men film series, appearing in X-Men: First Class, X-Men: Days of Future Past (2014), X-Men: Apocalypse (2016), and Dark Phoenix (2019).
James drew particular critical attention for Split (2016), directed by M. Night Shyamalan, in which he portrayed a man with 23 distinct personalities. He reprised the role in Glass (2019).
Later work includes It Chapter Two (2019), Speak No Evil (2024), and The Book of Clarence (2024).
In 2026, he made his directorial debut with California Schemin’, a film about a Scottish duo who posed as Californian rappers to land a record deal.
Anne-Marie Duff’s Career
Anne-Marie Duff trained at Drama Centre London and built her reputation through stage and television work across three decades.
She rose to wider recognition with her role as Fiona Gallagher in Shameless (Channel 4, 2004-2005) and as Queen Elizabeth I in the BBC miniseries The Virgin Queen (2005).
Her film work includes The Magdalene Sisters (2002), Notes on a Scandal (2006), Nowhere Boy (2009), which earned her the British Independent Film Award for Best Supporting Actress, and Suffragette (2015).
Duff won the BAFTA TV Award for Best Supporting Actress in 2024 for her performance as Grace Williams in Bad Sisters on Apple TV+.
The second season of Bad Sisters premiered on 13 November 2024. In 2025, she received an Officer of the Order of the British Empire (OBE) for her services to drama.
That same year she appeared in the television series Reunion, which premiered on 7 April 2025.
Brendan McAvoy Net Worth
Brendan McAvoy holds no personal wealth as a 16-year-old with no professional career. His financial situation reflects that of any child his age.
The wealth of his family is substantial, however. James McAvoy’s estimated net worth is $20 million as of 2026, built through more than three decades of film, television, and theatre work.
His income comes from Hollywood productions, West End stage work, voice roles, and his move into directing.
Anne-Marie Duff has similarly built a strong screen career, with additional recognition following her BAFTA win in 2024.
Brendan’s upbringing has been comfortable by any measure, with both parents maintaining homes in North London throughout his childhood.
Brendan McAvoy Social Media
Brendan McAvoy does not have any verified or confirmed social media accounts. His parents have kept his online presence entirely private, in keeping with their policy of shielding him from public attention.
His father James McAvoy is active on Instagram at @jamesmcavoyrealdeal and holds an official account on X at @JamesMcAvoy67.
Anne-Marie Duff does not maintain public social media accounts. For now, Brendan McAvoy remains entirely absent from the public internet.
Conclusion
Brendan McAvoy is the privately raised son of two of Britain’s most accomplished actors, growing up away from the cameras that follow his parents’ careers.
As he enters adulthood, his path remains entirely his own to define, with the example of James McAvoy and Anne-Marie Duff’s work as a foundation few teenagers could claim.