From Thanos To 'Girl Dad': The Untold Story Of Josh Brolin's 4 Children And Their Wildly Different Lives

Few Hollywood actors possess the formidable presence of Josh Brolin, a star who has masterfully transitioned between iconic roles like the villainous Thanos in the Marvel Cinematic Universe and the stoic, complex characters in Oscar-winning dramas like No Country for Old Men and Dune. Yet, as of December 2025, the most defining role for the veteran actor is perhaps the one he plays at home: a dedicated father of four children spanning three decades, whose lives are as varied and fascinating as his filmography.

The Brolin family dynamic is a captivating blend of generational Hollywood talent and a quiet, private life away from the spotlight. From his two adult children, who are now pursuing their own distinct paths, to his two young daughters with current wife Kathryn Boyd Brolin, this is a deep dive into the unique lives and careers of Josh Brolin’s four children and the women who raised them.

Josh Brolin: A Complete Family and Career Profile

Known for his rugged intensity and versatility, Josh Brolin’s personal life and career have been marked by significant milestones, including three marriages and a late-career resurgence as one of Hollywood's most sought-after stars.

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• Full Name: Josh James Brolin
• Born: February 12, 1968, in Santa Monica, California, US
• Parents: James Brolin (father, actor) and Jane Cameron Agee (mother, wildlife activist)
• Film Debut: The Goonies (1985) as Brand Walsh
• Notable Roles: Thanos (MCU), Llewelyn Moss (No Country for Old Men), Cable (Deadpool 2), Gurney Halleck (Dune)
• Spouses:
  • Alice Adair (m. 1988–1994)
  • Diane Lane (m. 2004–2013)
  • Kathryn Boyd Brolin (m. 2016–Present)
• Children: Four (Trevor Mansur Brolin, Eden Brolin, Westlyn Reign Brolin, Chapel Grace Brolin)

The Adult Children: Trevor and Eden Brolin (with Alice Adair)

Josh Brolin’s first two children, Trevor and Eden, come from his first marriage to actress Alice Adair. Their lives offer a clear contrast, with one embracing the family’s Hollywood legacy and the other choosing a path far from the public eye.

Trevor Mansur Brolin: The End of Life Doula

Trevor Mansur Brolin, born in 1988, is the eldest of Josh Brolin’s children, making him approximately 37 years old as of 2025. Unlike his famous father and half-sister, Trevor has consciously chosen a life of privacy, preferring to stay away from the Hollywood limelight.

• Age: ~37 (as of 2025)
• Mother: Alice Adair
• Career Path: Trevor is reported to live a quiet life, dedicated to pursuits outside of acting. Sources suggest he has found a "deeply rewarding" profession as an End of Life doula and a life coach, focusing on helping others through significant life transitions.

Josh Brolin occasionally shares rare glimpses of his eldest son, expressing pride in his quiet, meaningful life, demonstrating a deep respect for Trevor's decision to forgo the celebrity spotlight.

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Eden Brolin: Continuing the Acting Dynasty

Born on November 30, 1994, Eden Brolin is approximately 30 years old and has followed in the footsteps of both her father and grandfather, James Brolin, by pursuing a successful acting career.

• Age: ~30 (as of 2025)
• Mother: Alice Adair
• Notable Roles: Eden is best known for her recurring role as Mia in the hit Paramount Network series Yellowstone. She also starred as Charlie Singer in the Freeform television series Beyond.
• Recent Appearances: In a rare public outing, Josh Brolin recently made a red carpet appearance with Eden, showcasing the strong bond between the father and daughter as she continues to build her independent career.

Eden's career demonstrates a natural talent and a commitment to carving out her own identity in the industry, proving that the Brolin acting legacy is in good hands for the next generation.

The Young Daughters: Westlyn and Chapel (with Kathryn Boyd Brolin)

Josh Brolin’s current marriage to Kathryn Boyd Brolin, a former model and his personal assistant, has brought two young daughters into his life, marking a new chapter of fatherhood for the veteran actor.

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Kathryn Boyd Brolin: Photographer and Entrepreneur

Kathryn Boyd Brolin is more than just a celebrity spouse; she is a successful entrepreneur and a talented photographer. She earned a Bachelor's Degree in Journalism and co-founded the Moonlight Arts Collective, a platform that features work from various artists, including her husband.

She and Josh married in 2016 and have since welcomed two daughters, Westlyn and Chapel, giving Brolin the unique experience of being a father to both adult and very young children.

Westlyn Reign Brolin: The Elder Little Sister

Westlyn Reign Brolin, born in November 2018, is the couple’s first child together. She is approximately 6 years old as of late 2025.

Josh Brolin often shares heartwarming pictures and anecdotes about Westlyn on social media, showcasing his transition into a dedicated "Girl Dad." His interviews reflect on the joy and challenges of raising young daughters later in life, a theme he has discussed openly.

Chapel Grace Brolin: The Family's Newest Addition

Chapel Grace Brolin, born in December 2020, is the youngest member of the Brolin family, making her approximately 4 years old as of late 2025.

The name Chapel is a unique and meaningful choice, reflecting a period of profound personal change and spiritual reflection for the actor. The experience of raising his two young daughters has inspired Brolin to reflect on his own childhood and strive to break generational patterns of "self-destruction" to be a better father.

The Legacy of Fatherhood and Generational Change

Josh Brolin’s journey as a father is a testament to the complexities of modern family life. With four children spanning a 30-year age gap, his family unit is a fascinating study in generational differences and evolving parental roles.

His adult children, Trevor and Eden, have established independent lives, with Eden actively building her own Hollywood career and Trevor forging a path of quiet service.

Meanwhile, his role as a father to Westlyn and Chapel has become a source of profound personal growth. Brolin has spoken candidly about the challenges of balancing a demanding career with the responsibilities of a young family, highlighting a commitment to being present and breaking old cycles for the sake of his daughters.

Whether he is portraying a cosmic supervillain or an Old West lawman, Josh Brolin's most authentic and compelling performance remains that of a devoted husband and a proud father, navigating the joys and lessons of raising four unique individuals.