Where Is Josh Byrne Now?

By CelebPaid Editorial Team · 9 min read

Thematic image: a Renaissance fair tournament near Pittsburgh. Josh Byrne, who played Brendan Lambert on Step by Step, left acting in 1997, now works for the collectibles maker Sideshow, and actively participates in Renaissance fairs.Photo: Piotrus, CC BY-SA 3.0, via Wikimedia Commons

The Role: Brendan Lambert on Step by Step

Josh Byrne was born on February 15, 1984, in Los Angeles, California, the son of Diana and Ron Byrne, and he was acting before he was out of kindergarten. His defining role arrived in 1991, when ABC launched Step by Step, a family sitcom about the blended Lambert-Foster household. Byrne was cast as Brendan Lambert, the youngest of the Lambert kids: sweet, wide-eyed, and often the comic innocent at the center of the family's chaos.

Step by Step ran for seven seasons, and Byrne appeared in 132 episodes from 1991 to 1997, growing up on screen from age seven to thirteen. The show was a TGIF staple, part of the Friday-night lineup that defined family television in the 1990s, and Brendan was its resident kid: the one who asked the obvious questions, believed the unbelievable, and anchored the show's younger storylines. For a generation of viewers, he was the little brother of the blended family era.

Byrne's Brendan shared the screen with a large ensemble: Patrick Duffy and Suzanne Somers as the parents, Staci Keanan, Angela Watson, Christopher Castile, and Brandon Call as the siblings, and Sasha Mitchell as the scene-stealing cousin Cody. It was a big, loud, happy set, and Byrne has said in later years that his time on it left a lasting and profoundly positive impact on him.

The Start: Who's the Boss? and The Family Man

Before Step by Step, Byrne was already a working child actor. In 1990 and 1991, he appeared in three episodes of Who's the Boss? as Joey, holding his own on one of the biggest sitcoms of the era opposite Tony Danza. He also played Patrick Kozak in five episodes of The Family Man (1990-1991), the sitcom starring Richard Benjamin.

These early credits established the pattern of his career: the cute, natural kid who could handle real material. He was not a novelty; he was a professional, booking steady work in the most competitive segment of the business. By the time Step by Step came along, he had already proven he could do the job.

Mr. Saturday Night: Young Billy Crystal

In 1992, at eight years old, Byrne landed a film role with real pedigree: he played Buddy at age six in Mr. Saturday Night, the Billy Crystal-directed comedy-drama about a veteran comedian looking back on his life. Playing the younger version of Crystal's character put Byrne in the center of a major studio film, acting alongside one of the biggest comedy stars of the era.

It was the kind of credit that usually leads to bigger things. His future Step by Step co-star Jason Marsden played Crystal's character as a teenager in the same film, a neat bit of symmetry. But Byrne's career would not follow the usual trajectory. Within five years, he would walk away from acting entirely, and he would never come back.

The Vanishing: Brendan's Unexplained Exit

After the sixth season, when the character of Lilly Lambert was added to the show as a new baby, Josh Byrne left Step by Step. Brendan's disappearance was never explained on screen. The show moved to CBS for its seventh and final season in 1997-1998 without him, and no storyline accounted for where the youngest Lambert had gone.

It remains one of the great unsolved mysteries of 1990s television: a main character for six seasons, 132 episodes, simply gone, with no farewell episode and no in-universe explanation. Fans have theorized about it for decades. The truth is simpler and less dramatic than any theory: the actor was thirteen, he had been working since he was five, and he wanted to go back to being a kid. So he left, and the show went on without him.

School and Filmmaking: The Patrick Duffy Influence

After leaving the show, Byrne went back to school and discovered a new passion: filmmaking. In his January 2025 podcast appearance, he credited his on-screen father, Patrick Duffy, with sparking that interest. Duffy, a veteran actor with decades in the business, had evidently shared enough about the craft behind the camera to plant a seed in the young actor's mind.

It is a telling detail. Byrne did not leave the entertainment world out of bitterness or burnout; he left it with an education, mentorship, and a new creative direction. Filmmaking gave him a way to stay connected to storytelling without being in front of a camera. The kid who had spent his childhood being directed grew up interested in directing.

Sideshow: The Collectibles Career

Today, Byrne works for Sideshow, the renowned manufacturer of collectible action figures and statuettes. It is a fitting day job for a former child actor turned comics enthusiast: Sideshow produces high-end licensed collectibles from the biggest franchises in pop culture, the kind of objects that fill the shelves of serious collectors.

The job connects directly to his passions. Byrne fell in love with comics during his Step by Step years, and a career surrounded by the physical artifacts of pop culture is a natural extension of that love. He is not famous anymore, and he does not need to be. He works in an industry he genuinely cares about, for a company respected by its community, doing work that has nothing to do with being recognized.

The Renaissance Fairs: Armor as a Second Skin

Byrne's most distinctive post-Hollywood pursuit is the Renaissance fair world. He actively participates in Renaissance fairs, and he has drawn explicit parallels between performing at fairs and acting, noting the similarities between the two crafts. Both require staying in character, projecting to a crowd, and committing fully to a role. The stage is different; the skills are the same.

He was previously part of a guild that built a replica tavern, where members taught visitors about the history and inner workings of taverns during the Renaissance period. It is hands-on historical education disguised as entertainment: building, researching, teaching, and performing, all at once. The January 2025 podcast episode about his fair life was fittingly titled Armor as a Second Skin.

The Comics: Sasha Mitchell's Mentorship

Byrne credits his former co-star Sasha Mitchell, who played cousin Cody Lambert, with mentoring him in comics. Mitchell was an avid comic book fan and an enthusiast of Renaissance fairs, and he passed both passions on to the younger actor. It is a lovely footnote to the Step by Step story: the on-screen mentor became a real-life one, shaping interests that would define Byrne's adult life.

The comics passion stuck. Decades after the show ended, Byrne's life still orbits the things Mitchell introduced him to: comics, fairs, and the culture of enthusiastic, knowledgeable fandom. Some child actors leave their sets with trauma; Byrne left his with hobbies, a mentor, and fond memories. That is about as good an outcome as the business produces.

The 2025 Podcast: Reuniting with Keanan and Lakin

In January 2025, Byrne gave a rare interview as a guest on Keanan and Lakin Give You Deja Vu, the podcast hosted by his former Step by Step co-stars Christine Lakin and Staci Keanan. The bonus episode, subtitled Armor as a Second Skin, covered his life since leaving the industry: the school years, the filmmaking passion, the Sideshow career, the Renaissance fairs, and his memories of set life.

It was the most public he had been in nearly three decades, and it was revealing in its warmth. He spoke fondly of the show, of Patrick Duffy's mentorship, and of Sasha Mitchell's influence. There was no bitterness, no score-settling, no tell-all energy. Just a forty-year-old man, happy with his life, catching up with old friends and talking about the things he loves.

His Legacy

Josh Byrne's legacy is Brendan Lambert, the sweet youngest kid of Step by Step, a character who appeared in 132 episodes of one of the defining family sitcoms of the 1990s and then vanished without explanation. For the generation that grew up on TGIF, Brendan is frozen in time: forever young, forever part of the blended family.

But Byrne's real story is what happened after the vanishing. He went back to school, found filmmaking, built a career at Sideshow, and threw himself into Renaissance fairs and comics with the enthusiasm of someone who genuinely loves what he does. He did not become a cautionary tale or a comeback story. He became something rarer: a former child actor who grew up, moved on, and built a life he actually enjoys. The armor, as the podcast put it, fits like a second skin.

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