He’s spent two decades growing up in one of Britain’s most recognizable adventure families — and almost entirely out of the spotlight.
Bear Grylls built a global career out of being watched: cameras following him through jungles, deserts, and Arctic ice for two decades of survival television. His middle son has taken the opposite path. Marmaduke Mickey Percy Grylls has grown up alongside that fame without stepping into it, which is exactly why his name keeps generating search interest even though there’s comparatively little confirmed information about him.
This piece sticks to what’s been publicly reported and attributed to credible sources, and says so plainly where the record runs thin.
Marmaduke Mickey Percy Grylls is the second of three sons born to adventurer and TV presenter Bear Grylls (Edward Michael Grylls) and author Shara Grylls (née Cannings Knight). Born in April 2006 in the UK, he turned 20 in 2026, sits between older brother Jesse (b. 2003) and younger brother Huckleberry (b. 2009), and has deliberately stayed out of the public eye and off television.
The Grylls Household: Family Structure and Background
The core facts about the family are well established through Bear Grylls’ own public statements and his official biography:
| Family Member | Relationship | Known Detail |
|---|---|---|
| Bear Grylls (Edward Michael Grylls) | Father | Former 21 SAS Regiment soldier; youngest Briton to summit Everest, aged 23, in 1998; UK Chief Scout |
| Shara Grylls (née Cannings Knight) | Mother | Author and philanthropist |
| Jesse Grylls | Older brother | Born 2003 |
| Marmaduke Mickey Percy Grylls | Subject | Born April 2006 |
| Huckleberry Grylls | Younger brother | Born 2009 |
Bear Grylls has spoken openly in interviews about splitting time between the UK and Switzerland with his family, and about raising his three sons around outdoor life — sailing, climbing, and expedition-style travel — rather than around film sets.
Where the Traditional Name Comes From
“Marmaduke” and “Percy” are old English names with aristocratic associations, and Bear Grylls has referenced family heritage when discussing his children’s names in past interviews. Beyond that general context, there’s no verified account of the specific reasoning behind this particular combination — so any detailed backstory circulating online should be treated as speculation rather than fact.
A Deliberately Private Upbringing
This is the throughline of everything reported about Marmaduke: the family has kept him, and his brothers, out of the media machine that surrounds their father.
- He is not a cast member on any of Bear Grylls’ television projects (Man vs. Wild, Running Wild with Bear Grylls, Celebrity Bear Hunt).
- He appears occasionally in family photos Bear Grylls shares on social media around holidays or milestones, but he does not run a public-facing media presence of his own.
- Outdoor and adventure sports — sailing in particular — are consistently mentioned as interests shared across the three Grylls brothers.
Beyond that pattern, there isn’t a verified, sourced account of his schooling, career path, or relationships. Articles that present specific details on those topics as settled fact are, as far as public records show, going further than the available reporting supports.
On Net Worth and Career
There is no authoritative, individually attributed net worth or income figure for Marmaduke Grylls. He has not built an independent public career or business that would generate verifiable financial data, and Bear Grylls’ own reported wealth (built through television, book deals, and brand partnerships) is not a figure that transfers to his children individually. Any specific dollar amount attached to Marmaduke’s name should be treated as unverified.
Quick Profile
- Full name: Marmaduke Mickey Percy Grylls
- Born: April 2006, United Kingdom
- Age (2026): 20
- Parents: Bear Grylls and Shara Grylls
- Siblings: Jesse Grylls (older), Huckleberry Grylls (younger)
- Family base: Split between the UK and Switzerland
- Public profile: Private; no television or media career of his own
- Reported interests: Sailing, outdoor and adventure activities
Frequently Asked Questions
Who are Marmaduke Grylls’ parents?
His parents are Bear Grylls, the British adventurer, author, and TV presenter, and Shara Grylls (née Cannings Knight), an author and philanthropist.
Does Marmaduke appear on Bear Grylls’ TV shows?
No. Marmaduke Grylls has not appeared as a cast member on any of his father’s television programs. He has occasionally been pictured in family social media posts, but he does not hold a public media role.
How old is Marmaduke Grylls in 2026?
He was born in April 2006, which makes him 20 years old in 2026.
Does Marmaduke Grylls have siblings?
Yes. He is the middle of three brothers — Jesse Grylls, born in 2003, is older, and Huckleberry Grylls, born in 2009, is younger.
What is Marmaduke Grylls’ net worth?
There is no verified, individually attributed net worth figure publicly available for Marmaduke Grylls. He has not pursued a public-facing career that would generate reportable financial data.
The Bottom Line
Marmaduke Grylls’ public story is really the story of what his family chose not to publicize. In a media landscape that turns the children of famous parents into content on their own, the Grylls family’s approach — keep the boys close to the outdoors and away from cameras — is the most consistently documented fact about him. Everything more specific than that deserves a skeptical read.
Sources & Verification
- Bear Grylls’ official biography and public statements (beargrylls.com)
- People magazine family coverage of the Grylls family
- Multiple family interviews given by Bear Grylls referencing his sons’ ages, interests, and upbringing
Editorial note: Marmaduke Grylls is a private individual who has not sought a public profile. Details beyond what is attributed to Bear Grylls’ own public statements or established news reporting — including any specific net worth, education, or relationship claims — are unverified and should be treated accordingly.
