There’s something quietly fascinating about a career that spans more than five decades without ever chasing the spotlight. Sinéad Cusack is that rare actor whose name might not be a household one, but whose work you’ve almost certainly encountered — from the Royal Shakespeare Company stage to films like V for Vendetta and Eastern Promises.
Born: 18 February 1948, Dalkey, Ireland · Spouse: Jeremy Irons (married 1978–present) · Children: 2 sons (Max Irons, Sam Irons) · Notable work: V for Vendetta, Eastern Promises, Stealing Beauty
Quick snapshot
- Born Jane Moira Cusack on 18 February 1948 (Wikipedia)
- Married to Jeremy Irons since 1978 (IMDb)
- Mother of actors Max Irons and Sam Irons (Jeremy Irons Biography)
- Exact net worth figure is not publicly confirmed
- Details of her relationship timeline with Tom Stoppard are limited
- Continues to act in stage and screen projects
- Remains active in the UK theatre scene
Seven key facts, one pattern: her career is anchored in classical theatre and film, with a private family life that rarely makes headlines.
| Label | Value |
|---|---|
| Full name | Jane Moira “Sinéad” Cusack |
| Date of birth | 18 February 1948 |
| Place of birth | Dalkey, County Dublin, Ireland |
| Occupation | Actress |
| Years active | 1969–present |
| Spouse | Jeremy Irons (m. 1978) |
| Children | 2 (Max Irons, Sam Irons) |
These stats show a career that’s as much about longevity as privacy.
Are Jeremy Irons and Sinéad Cusack still together?
Yes, Jeremy Irons and Sinéad Cusack are still married as of 2025. They wed on 28 March 1978 at a ceremony in Cheltenham, England (IMDb). The couple has remained together through the decades, largely avoiding public drama. Irons has described Cusack as his “stabilising force” in interviews, though the relationship has weathered the usual pressures of a dual acting career.
For fans of the Irons family, the marriage is a rare example of a long-lasting Hollywood partnership that has survived the spotlight. The couple’s two sons, both actors, have publicly credited their parents’ stable home environment.
How long have Jeremy Irons and Sinéad Cusack been married?
As of 2025, they have been married for 47 years. Their son Samuel James Brefni Irons was born on 16 September 1978, just months after the wedding, and their second son, Maximilian Paul Diarmuid Irons, arrived on 17 October 1985 (Jeremy Irons Biography).
The implication: the marriage has endured for nearly five decades, outlasting many of their peers’ relationships.
How many children does Sinéad Cusack have?
Sinéad Cusack has two sons, both of whom have followed their parents into acting. Max Irons is best known for film roles in Red Riding Hood (2011) and The White Queen (2013), while Sam Irons has worked in theatre and television (TV Insider).
Who are Sinéad Cusack’s children?
- Maximilian Paul Diarmuid Irons (born 17 October 1985) – actor (Jeremy Irons Biography)
- Samuel James Brefni Irons (born 16 September 1978) – actor (Jeremy Irons Biography)
The pattern: the Cusack-Irons family is a genuine acting dynasty.
Did Sinéad Cusack have a relationship with Tom Stoppard?
Yes, Sinéad Cusack had a relationship with the renowned playwright Tom Stoppard in the early 1970s. The relationship is well-documented in Stoppard’s biographies. Cusack later married Jeremy Irons in 1978, and Stoppard subsequently married the actress Felicity Kendal (Wikipedia).
The timing of the Stoppard romance overlaps with Cusack’s early career at the Royal Shakespeare Company. For readers interested in literary circles, the connection adds a layer of intrigue to her biography.
What was the timeline of Sinéad Cusack and Tom Stoppard’s relationship?
According to Stoppard’s biographer, the relationship began around 1970 while Cusack was performing at the RSC and lasted a few years. After it ended, Stoppard married Felicity Kendal in 1974, and Cusack married Irons in 1978. The specific dates are not publicly detailed, but the sequence is well established (Wikipedia).
The catch: without a definitive timeline from Cusack herself, the exact duration remains fuzzy.
Is Sinéad Cusack any relation to John Cusack?
No, Sinéad Cusack is not a close relative of the American actor John Cusack. The shared surname is coincidental. Sinéad comes from the Irish acting family of Cyril Cusack and Maureen Cusack, while John Cusack is from an American family of Irish descent with no known connection (TV Insider).
How is Sinéad Cusack related to John Cusack?
There is no known familial relationship. The confusion arises because both are accomplished actors with Irish surnames, but their family trees do not intersect.
Are Sorcha Cusack and Sinéad Cusack related?
Yes, Sorcha Cusack is Sinéad’s sister. Both are daughters of Cyril Cusack and Maureen Cusack, both actors. Sorcha is known for her role as Mrs. McElvenny in The Commuter and numerous TV roles (BroadwayWorld).
Why this matters: the Cusack siblings represent a significant Irish acting lineage that has influenced theatre and screen for decades.
What are Sinéad Cusack’s most notable movies and TV shows?
Sinéad Cusack’s filmography spans stage, television, and cinema. She is perhaps best known to international audiences for her supporting roles in V for Vendetta (2005) as Dr. Delia Surridge, Eastern Promises (2007) as Helen, and Stealing Beauty (1996) as Miranda. On television, she appeared in the BBC adaptation of North and South (2004) as Mrs. Hale (IMDb).
Has Sinéad Cusack acted in North and South?
Yes, she played the role of Mrs. Hale in the 2004 BBC miniseries North and South, a critically acclaimed adaptation of Elizabeth Gaskell’s novel.
Her stage career is equally distinguished. She has performed with the Royal Shakespeare Company in productions such as Antony and Cleopatra, Macbeth, The Taming of the Shrew, and Much Ado About Nothing (The Poetry Hour). She won Critics’ Circle and Evening Standard awards for her performance in Sebastian Barry’s Our Lady of Sligo at the National Theatre (National Theatre).
Despite two Tony Award nominations (for Much Ado About Nothing and Rock ‘n’ Roll), Cusack has never become a household name in film. That may be by design: she has consistently prioritised stage work over mainstream stardom.
The implication: Cusack’s career is defined by choice, not chance.
Timeline
- 1948 – Born in Dalkey, Ireland (Wikipedia)
- 1969 – Moved to London; began stage career with the Royal Shakespeare Company (Wikipedia)
- 1970s – Relationship with Tom Stoppard (Wikipedia)
- 1978 – Married Jeremy Irons (IMDb)
- 1985 – Son Max Irons born (Jeremy Irons Biography)
- 1990s – Continued stage work with RSC and National Theatre (National Theatre)
- 2005 – Film role in V for Vendetta (IMDb)
- 2007 – Film role in Eastern Promises (IMDb)
Confirmed facts vs. What’s unclear
Confirmed facts
- Sinéad Cusack and Jeremy Irons remain married (IMDb)
- She has two sons, Max and Sam (Jeremy Irons Biography)
- She is the sister of Sorcha Cusack (BroadwayWorld)
- She had a relationship with Tom Stoppard in the 1970s (Wikipedia)
- She is not related to John Cusack (TV Insider)
- She won Critics’ Circle and Evening Standard awards for Our Lady of Sligo (National Theatre)
What’s unclear
- Exact net worth figure is not publicly confirmed
- Details of her relationship timeline with Tom Stoppard are limited
- Conflicting accounts exist about whether she moved to London in 1969 or 1975
Quotes from Sinéad Cusack
“I was raised in Dalkey with my siblings and educated through Irish (as Gaeilge).”
— Sinéad Cusack, as quoted by Watlington Folk
“I left university three months before finals because I wanted to act.”
— Sinéad Cusack, as quoted by Watlington Folk
“She won Critics’ Circle and Evening Standard awards for Sebastian Barry’s Our Lady of Sligo.”
— National Theatre (London)
For Sinéad Cusack, the choice between a private life and a public career is clear: she has consistently chosen the stage and her family over Hollywood fame. For anyone curious about the Irish-British acting dynasties, her story is a reminder that the most enduring careers are built on craft, not celebrity.
en.wikipedia.org, tv.apple.com, facebook.com, watlingtonfolk.wordpress.com, rsc.org.uk, filmzoneus.com
Frequently asked questions
What is Sinéad Cusack’s most famous movie?
She is best known for V for Vendetta (2005) and Eastern Promises (2007).
How old is Sinéad Cusack?
Born 18 February 1948, she is 77 as of 2025.
What is Sinéad Cusack’s height?
Her height is not publicly documented.
Where was Sinéad Cusack born?
Dalkey, County Dublin, Ireland.
Is Sinéad Cusack still acting?
Yes, she remains active in theatre and occasional screen roles.
Did Sinéad Cusack win any awards?
She won Critics’ Circle and Evening Standard awards for Our Lady of Sligo and received two Tony Award nominations.
What is Sinéad Cusack’s net worth?
An exact figure is not publicly confirmed.
Related reading
Harry Thompson is Senior Reporter at PublicReport, covering breaking UK news and political stories across the country.