Marmaduke Mickey Percy Grylls: Who Is Bear Grylls’ Middle Son — And What Is He Doing Now?

There is something quietly subversive about being the middle child of the world’s most famous adventurer and choosing, at least for now, to sell hot dogs. In the summer of 2025, Marmaduke Mickey Percy Grylls could be found at the Wimbledon Championships doing exactly that — reportedly serving up to 5,000 hot dogs a day, and doing so, by his father’s public account, always with a smile on his face. It was a detail that caught the imagination of anyone paying attention: a young man raised between the Grylls family’s off-grid island in North Wales and the cloistered quadrangles of Eton College, earning his keep at one of the world’s most prestigious sporting events by standing behind a food counter.

Marmaduke — known in the family as Mickey, or sometimes Duke — was born on April 6, 2006, making him twenty years old in 2026. He is the second of three sons born to Bear Grylls, the British adventurer, television personality, and author, and his wife Shara Grylls, a novelist and philanthropist. While Bear Grylls has spent decades in front of cameras, dangling from helicopters and eating things that most people would sprint away from, Marmaduke has grown up on the periphery of that fame — present enough to be glimpsed occasionally in a birthday post, but sufficiently shielded to develop his own identity away from the lens.

What little the public does know about him is, frankly, more interesting than most celebrity profiles manage to convey. In the space of about eighteen months following his Eton graduation, he worked as a butcher in London, crossed several countries in Asia on an extended solo road trip, hawked hot dogs at Wimbledon, and enrolled at Durham University to study Business and Management. That is not the trajectory of someone coasting on a famous surname. It is the record of a young man who appears, at least so far, to be doing things his own way.

Early Life & Upbringing

Marmaduke was born in the United Kingdom on April 6, 2006, the second child of Bear and Shara Grylls, arriving three years after his older brother Jesse and three years before his younger brother Huckleberry. His birthplace has not been publicly specified beyond the United Kingdom, and no further detail has been confirmed through verified sources.

Growing up in the Grylls household was, by all credible accounts, unconventional in the best possible sense. The family’s primary retreat is a property on a small island off the coast of North Wales — described by Bear in a 2021 interview with Hello! as a place with “no mains electricity or water,” running entirely off-grid. “Our three boys, Shara and I are happier there than anywhere else on earth,” he said, “adventure and solitude mixed with fun and family.” For a child developing his sense of the world, that environment — remote, nature-bound, intentionally stripped of modern convenience — would inevitably leave a mark.

Faith also plays a significant role in the Grylls household. Bear has spoken openly and repeatedly about Christianity as the “backbone” of his life, and that spiritual foundation appears to have been woven into his children’s upbringing. The family’s values, as they have emerged through Bear’s interviews, books, and social media over the years, centre on resilience, service, loyalty, and a genuine respect for the natural world. These are not abstract virtues for the Grylls children — they were lived, regularly, in genuinely demanding circumstances.

Marmaduke’s name itself attracted no small amount of public amusement. Shara Grylls has addressed this with characteristic good humour. “When you’re called Bear and Shara, you’re not going to have children called John and Ian,” she said. “I do feel a bit sorry for them sometimes, actually.” When Bear posted a photo of Marmaduke on Instagram, the comments reportedly included reactions like “poor child” — to which other followers replied by pointing out the other siblings’ names. It is the kind of good-natured family absurdity that suggests the Grylls household, for all its extraordinary elements, also contained plenty of ordinary laughter.

Parents, Siblings & Family Background

Bear Grylls — born Edward Michael Grylls on June 7, 1974, in Donaghadee, Northern Ireland — needs little introduction. He served in the British Special Air Services, climbed Mount Everest at twenty-three (among the youngest Britons to do so), and went on to become one of the most recognisable faces in the history of adventure television. His series Man vs. Wild ran for 78 episodes, and more recently Celebrity Bear Hunt premiered on Netflix in February 2025. He was appointed Chief Scout of the United Kingdom in 2009 and served until September 2024. He holds honorary military ranks from the Royal Naval Reserve, Royal Marines Reserve, and British Army, and in 2025 published a retelling of the life of Jesus that reached number one on the Sunday Times bestseller list. His public profile is, to put it mildly, considerable.

Shara Grylls, born Shara Cannings Knight, is an author and philanthropist whose public profile has been deliberately quieter than her husband’s. She has published two books on marriage — Marriage Matters (2006) and Never Stop Holding Hands (2012) — and works with a number of charitable organisations. She and Bear met on New Year’s Eve 1997 or 1998 (sources give slightly different years) on a beach in Scotland, and married on January 15, 2000, when both were in their mid-twenties. As of January 2026, they have been married for twenty-six years. Bear has described her in public repeatedly as the “backbone” of family life, the one who managed the household and raised three boys while he was frequently on the other side of the world filming.

Marmaduke’s older brother Jesse, born in June 2003, graduated from Eton in 2021 and has pursued a career in visual art, holding solo exhibitions in London and Switzerland. He also has a passion for music. Jesse represents the most publicly visible of the Grylls sons, maintaining an active social media presence and occasionally working alongside his father. The youngest brother, Huckleberry Edward Jocelyne Grylls, was born in January 2009 and attends Eton College. He came to brief public attention in 2023 when he reached the national finals of the Play Your Way to Wimbledon tennis competition — beating out, by the event’s own figures, roughly 14,000 competitors in his age group to reach the final fifty. Bear’s paternal grandfather, Sir Michael Grylls, was a Conservative politician, and the family’s cricketing heritage goes back several generations through the maternal line.

Full Biography & Career Timeline

Education

Marmaduke attended Eton College, graduating in 2024. His LinkedIn profile, cited by People magazine in 2025, confirms this. Eton — formally the Eton College, situated in Windsor — is among the most academically rigorous and socially elite secondary schools in the United Kingdom, having produced nineteen British Prime Ministers among its alumni. It is also Bear Grylls’ own alma mater, and elder brother Jesse graduated from the same institution in 2021.

That Marmaduke followed the same educational path as his brother and his father carries a certain weight, but what came next is arguably more revealing of his character. Rather than proceeding directly to university, he spent the better part of a year doing manual work and long-distance travel on self-earned funds. He is now studying Business and Management at Durham University, a Russell Group institution consistently ranked among the top ten universities in the UK. No further details about his specific course or college within Durham have been publicly confirmed.

Public Image & Personality

For someone with a name that practically demands attention, Marmaduke Grylls has managed — at least until recently — to exist largely below the public radar. Unlike his older brother Jesse, who maintains a visible social media presence and has shown his paintings at solo exhibitions, Marmaduke has not, as of 2026, maintained any publicly confirmed social media accounts. His appearances in the public record come almost entirely through his father’s Instagram and through secondhand references in interviews and panel discussions.

What those references collectively sketch is a portrait of someone with a certain warmth and self-sufficiency. Bear Grylls, who is not prone to false modesty in his public communications, has on multiple occasions singled out Marmaduke’s character rather than his achievements. When his son turned seventeen, Bear wrote on Instagram, “So proud of your heart.” For the eighteenth birthday, it was, “keep shining bright.” The emphasis, consistently, is on who Marmaduke is rather than what he has done — which suggests either that Bear Grylls is a shrewder parent than his image might imply, or that there is genuinely something about the young man’s disposition that inspires that kind of comment.

The anecdotes that have reached the public domain reinforce this. Selling hot dogs at Wimbledon is not a job that most people with Eton educations pursue voluntarily. Working as a butcher in London before funding a four-month solo trip to Asia on those earnings reflects a degree of financial self-reliance that would be remarkable in any twenty-year-old, let alone one whose father is reportedly worth tens of millions of pounds. Whether this is something Marmaduke has chosen consciously, or something encouraged by Bear and Shara as a deliberate parenting philosophy — or simply the personality of the young man himself — it projects a quality that the public seems to find genuinely appealing.

Financial Overview

Marmaduke Grylls is a twenty-year-old undergraduate student with no publicly confirmed income sources, business interests, or career earnings. Verified financial data for Marmaduke specifically has not been publicly disclosed, and it would be inaccurate to assign any net worth figure to him at this stage of his life.

His father, Bear Grylls, is a different matter. Bear has built an extensive commercial portfolio over more than two decades, encompassing television production, brand partnerships, public speaking, books, the BMF fitness company (rebranded as Be Military Fit with Bear Grylls, acquired in September 2018), and his learning and development company BecomingX. Various media estimates of Bear’s net worth have circulated widely, but Anthropic’s editorial standards preclude reproducing unverified financial claims. What is not disputed is that the Grylls family lives comfortably — and that Marmaduke, by his own post-Eton choices, appears to have elected to supplement whatever family support he receives with earnings from manual work.

“There is something worth paying attention to in the fact that a young man raised with every advantage of education and family name chose to fund his gap year by working in a London butcher’s shop — and that his father thought that was worth telling the world about.”

— AB Rehman, Celebrity Features Writer

Where Is He Now? Current Lifestyle & Status

As of 2026, Marmaduke Grylls is enrolled at Durham University, where he is pursuing a BA in Business and Management. Durham is a collegiate university set in the historic cathedral city of County Durham, northeast England, and consistently ranks among the United Kingdom’s top ten universities in national league tables. Marmaduke would have begun his studies in autumn 2025, following his return from Asia and his stint at the Wimbledon Championships.

His current day-to-day life, beyond his student status, has not been documented through verified public sources. He does not maintain any publicly identified social media presence, and there are no confirmed interviews, statements, or public appearances attributed to him directly. What is observable is the pattern: a young man who has, in the past two years, worked physical jobs, travelled extensively alone, and enrolled in a rigorous academic programme — none of which required his father’s name to arrange.

The Grylls family as a unit appears to be in an active and public phase. Bear has continued producing television work at pace — Celebrity Bear Hunt for Netflix, a new BBC series beginning in February 2026, Running Wild on Fox — while also publishing what became a Sunday Times number-one bestseller in June 2025. Shara, meanwhile, has maintained her philanthropic work. The family’s North Wales island retreat presumably remains their shared sanctuary, even as each member’s life is increasingly its own thing.

Relationships & Personal Life

No information regarding Marmaduke’s romantic relationships has been confirmed through any verified public source. He is twenty years old in 2026, a university student, and does not maintain a public social media presence through which such information would typically emerge. This detail has not been publicly disclosed, and speculation would be inappropriate.

His sibling relationships, by contrast, appear warm and characterised by genuine mutual affection. Bear has described his three sons as “so different” from one another, which — between a painter-musician, a traveller-turned-student, and a national-level tennis player — is borne out by the facts. Jesse, now in his early twenties, has already built a professional creative identity. Huckleberry, still in his mid-teens and at Eton, is showing early promise in sport. Marmaduke sits between them — neither the established eldest nor the youngest with everything still ahead of him, but carving out something distinctly his own in the middle.

Final Thoughts

The story of Marmaduke Mickey Percy Grylls is, at this point, still very much being written. He is twenty years old. He has, in the past two years, done more varied work and seen more of the world than most people twice his age — and done so, by all evidence, on his own terms and without capitalising on the family name in any visible way. Whether his Durham degree leads him into business, travel, something creative, or something entirely unforeseeable, the foundations seem solid.

What makes Marmaduke a quietly interesting public figure — to whatever limited extent he is a public figure at all — is that the shape of his early adult life runs slightly counter to expectations. The son of a globally famous adventurer: you might expect branded social media, sponsored content, a shortcut somewhere. Instead, you get a young man selling hot dogs at Wimbledon and funding his own trip to Asia with earnings from a butcher’s counter. His father once told the Daily Mail, speaking of his sons, “Do I want them to grow up to be me? No, actually. I’m unemployable in the real world. I don’t want this for them.” On current evidence, Marmaduke appears to be taking that sentiment seriously.