Franklin Jonas Biography: Age, Family, Music Career, Songs and Facts
Franklin Jonas has spent much of his life connected to one of the most recognizable musical families in American pop culture, but his adult career tells a story that is increasingly his own. Also widely known as Frankie Jonas, the American singer, songwriter, producer, and actor grew up as the youngest brother of Kevin, Joe, and Nick Jonas, the three musicians behind the Jonas Brothers.
While audiences first encountered him as a child actor and voice performer, Franklin eventually moved toward songwriting, audio production, and independent music. His 2023 debut EP, Sewer Rat, introduced a more personal musical identity far removed from the polished teen-pop world traditionally associated with the Jonas name.
More recently, Franklin has expanded that identity through Franklin Jonas & The Byzantines, a project shaped by Americana songwriting, acoustic instrumentation, introspective lyrics, and contemporary production.
Here is a closer look at Franklin Jonas’ biography, age, childhood, family, acting career, music, education, and artistic evolution.
Who Is Franklin Jonas?
Full name: Franklin Nathaniel Jonas
Known as: Franklin Jonas, Frankie Jonas
Date of birth: September 28, 2000
Birthplace: Ridgewood, New Jersey, United States
Nationality: American
Profession: Singer, songwriter, producer, actor
Years active: 2008–present
Siblings: Kevin Jonas, Joe Jonas, Nick Jonas
Notable EP: Sewer Rat
Musical project: Franklin Jonas & The Byzantines
Franklin Nathaniel Jonas is an American singer, songwriter, producer, and actor who initially became known publicly as Frankie Jonas, the youngest member of the Jonas family.
Born on September 28, 2000, he grew up around entertainment from an early age. His three older brothers — Kevin, Joe, and Nick Jonas — became internationally famous as the Jonas Brothers, placing Franklin close to the music industry throughout his childhood.
However, Franklin did not simply follow the same career blueprint. His creative path has included acting, voice work, audio engineering, songwriting, production, and eventually releasing music under his own name.
Franklin Jonas’ Age and Early Life
Franklin Jonas was born in Ridgewood, New Jersey, on September 28, 2000. He turns 26 in September 2026.
He is the youngest son of Denise Jonas and Paul Kevin Jonas Sr. Franklin grew up with three considerably older brothers: Kevin Jonas, Joe Jonas, and Nick Jonas.
Because his brothers achieved fame while he was still a child, Franklin experienced an unusual upbringing in which family life and the entertainment business frequently overlapped.
Fans of the Jonas Brothers came to know him affectionately as the “Bonus Jonas,” a nickname reflecting his status as the youngest brother outside the famous trio.
Yet as Franklin entered adulthood, he increasingly established an identity separate from that childhood nickname.
Franklin Jonas’ Family
Family is an unavoidable part of Franklin Jonas’ public story.
His oldest brother, Kevin Jonas, is a guitarist, singer, actor, and entrepreneur. Joe Jonas became known both through the Jonas Brothers and his work with DNCE, while Nick Jonas built a successful career spanning solo music, acting, and the Jonas Brothers.
Franklin is significantly younger than all three.
That age difference meant he experienced his brothers’ rise to international fame from a distinctive perspective. While Kevin, Joe, and Nick were touring, recording albums, appearing on television, and attracting a massive fan base, Franklin was still growing up.
Being surrounded by professional musicians also gave him early exposure to songwriting, recording, touring, and studio production. Nevertheless, his eventual solo material developed in a noticeably different musical direction.
Franklin Jonas’ Childhood Acting Career
Long before launching his adult music career, Franklin Jonas worked as an actor and voice performer.
One of his best-known early roles came with the English-language version of Studio Ghibli’s animated film Ponyo. Franklin provided the English voice of Sōsuke, one of the movie’s central characters.
Noah Cyrus voiced Ponyo in the English-language version, creating an interesting connection that would resurface many years later when Cyrus and Franklin collaborated musically.
Franklin also appeared in entertainment projects connected with the Jonas Brothers and Disney Channel era.
He had a recurring role in the television series Jonas and appeared in Camp Rock 2: The Final Jam. He additionally appeared in programs documenting or featuring his famous family.
These roles introduced Franklin to a large audience before he was old enough to develop an independent artistic career.
From Child Actor to Audio Engineer
Franklin Jonas’ transition into adulthood involved more than simply becoming a performer.
He developed an interest in the technical side of recording and studied audio engineering at the Blackbird Academy in Nashville. He graduated from the program in 2019.
That training became particularly important to his later career.
Rather than approaching music exclusively as a vocalist, Franklin gained experience with the mechanics of recording, engineering, and production. Understanding how music is constructed inside a studio helped him develop greater creative control over his own work.
He subsequently moved to Los Angeles to pursue work in studio engineering.
Franklin also studied subjects including writing and astrophysics through Columbia University, demonstrating interests extending beyond entertainment.
Franklin Jonas’ Music Career
Franklin Jonas began establishing himself publicly as an independent singer-songwriter in 2023.
Instead of attempting to recreate the accessible pop-rock formula associated with the Jonas Brothers, his early solo work was deliberately personal and unconventional.
His first releases included songs such as “Cocaine” and “Hoboken.” Both helped introduce listeners to Franklin as an adult songwriter rather than simply the youngest Jonas brother.
The music ultimately led to his debut EP, Sewer Rat.
Sewer Rat EP
Franklin Jonas released Sewer Rat in June 2023.
The project represented an important turning point because it established a musical identity under his own name. Its songwriting was introspective and emotionally direct, giving listeners a much clearer picture of the artist Franklin wanted to become.
The EP included songs such as:
- “Cocaine”
- “Hoboken”
- “Grow Up”
- “New Girl”
- “Cherub”
Rather than leaning heavily on his family’s established pop sound, Franklin explored alternative singer-songwriter territory with an intimate and sometimes deliberately rough-edged approach.
Sewer Rat therefore functioned as more than a debut release. It marked Franklin’s transition from someone primarily recognized through his family and childhood acting work into an independent recording artist.
Franklin Jonas & The Byzantines
Franklin’s musical evolution continued with Franklin Jonas & The Byzantines.
The project represents a new chapter in his career, combining traditional instrumentation and Americana influences with modern production ideas.
Franklin has described the concept behind The Byzantines in terms of survival and rebuilding — the possibility of creating something new after an apparent ending.
That idea aligns naturally with his own artistic evolution.
After releasing Sewer Rat, Franklin stepped away from releasing music for a period while reconsidering his musical identity and influences. The eventual result was material with a stronger Americana and roots-oriented character.
Songs associated with Franklin Jonas & The Byzantines include “Village Liquors,” “Road Soda,” “Break the Levee,” and “High and Sad.”
The music incorporates storytelling, acoustic textures, and traditional instruments while still allowing space for synthesizers and contemporary production.
High and Sad With Noah Cyrus
One particularly notable chapter arrived in 2026 with a version of “High and Sad” featuring Noah Cyrus.
The collaboration carried an unusual full-circle connection.
Nearly two decades earlier, Franklin and Cyrus had worked together as children on the English-language version of Ponyo, voicing Sōsuke and Ponyo respectively.
Their reunion as adult musicians consequently connected two very different periods of Franklin’s career: his childhood in entertainment and his mature identity as a songwriter and recording artist.
The song also fits the broader sound of Franklin Jonas & The Byzantines, where roots-oriented instrumentation meets modern production.
What Genre Is Franklin Jonas’ Music?
Franklin Jonas’ recent music is best understood through a mixture of Americana, folk, alternative singer-songwriter, and roots-oriented influences.
His approach differs noticeably from the pop and pop-rock music that made his older brothers internationally famous.
Artists associated with Franklin’s musical influences include songwriters such as Gillian Welch, Dave Rawlings, Dan Reeder, and Ruston Kelly.
Storytelling plays an especially important role.
Rather than emphasizing large-scale pop hooks alone, Franklin’s music frequently centers on personal reflection, adulthood, difficult emotions, memory, relationships, and reinvention.
Franklin Jonas & The Byzantines expands that approach with banjo, guitar, mandolin, piano, and other traditional textures alongside modern electronic elements.
Franklin Jonas’ Musical Style
One of the most interesting aspects of Franklin Jonas’ career is the distance between his childhood public image and his adult music.
People who remember him primarily as the cheerful younger brother appearing alongside the Jonas Brothers may encounter something very different when listening to his records.
His songwriting is introspective and often emotionally exposed.
There is also a strong emphasis on imperfection and lived experience. Instead of creating an immaculate celebrity persona, Franklin’s music frequently focuses on uncertainty, growth, memory, self-examination, and the complicated process of becoming an adult.
His audio-engineering background gives him another advantage: he understands music from both creative and technical perspectives.
As his career has developed, songwriting, performance, recording, and production have increasingly become interconnected parts of his artistic identity.
Is Franklin Jonas a Member of the Jonas Brothers?
No. Franklin Jonas is the younger brother of Kevin, Joe, and Nick Jonas, but he is not a member of the Jonas Brothers trio.
The Jonas Brothers consists of Kevin Jonas, Joe Jonas, and Nick Jonas.
Franklin has appeared in projects associated with his brothers and has performed in contexts connected with the family, but his own recording career is separate.
That distinction has become increasingly important as Franklin has developed an independent catalog and established Franklin Jonas & The Byzantines.
Franklin Jonas and His Brothers
Despite pursuing his own musical direction, Franklin remains closely associated publicly with the Jonas family.
Kevin, Joe, and Nick experienced extraordinary fame during Franklin’s childhood, meaning he effectively grew up watching the professional music business from inside it.
That background gave Franklin access to experiences few aspiring musicians receive at such a young age.
At the same time, carrying the Jonas surname creates inevitable comparisons.
His adult work appears designed not to deny that history but to build something distinct from it. Franklin’s emphasis on Americana songwriting, intimate lyrics, engineering, and self-production provides a clear contrast with the arena-sized pop legacy associated with his brothers.
Franklin Jonas’ Career in 2026
By 2026, Franklin Jonas had moved considerably beyond his childhood reputation as the “Bonus Jonas.”
Franklin Jonas & The Byzantines developed into an active performing project, with the group undertaking its first headlining run and performing material intended for a larger body of work.
The band’s developing catalog includes songs such as “Village Liquors,” “Road Soda,” “Break the Levee,” and “High and Sad.”
For Franklin, this phase represents an important career transition.
His 2023 material proved he could release music independently of his brothers. The Byzantines era is expanding that foundation into a fuller artistic world built around songwriting, musicianship, live performance, and a recognizable sonic identity.
Interesting Facts About Franklin Jonas
Franklin’s full name is Franklin Nathaniel Jonas, although millions of fans originally knew him as Frankie Jonas.
He was born on September 28, 2000, making him the youngest of the four Jonas brothers.
He voiced Sōsuke in the English-language version of Studio Ghibli’s Ponyo.
Franklin studied audio engineering at Nashville’s Blackbird Academy before fully launching his recording career.
His debut EP, Sewer Rat, arrived in 2023.
Unlike the Jonas Brothers’ pop-rock foundation, Franklin’s more recent music draws heavily from Americana, folk, roots music, and intimate singer-songwriter traditions.
He later reunited creatively with his former Ponyo co-star Noah Cyrus through the song “High and Sad.”
Franklin Jonas’ Evolution as an Artist
Franklin Jonas’ biography is unusual because his fame came before his artistic identity was fully formed.
He was already recognizable as a child because of his brothers. He acted, performed voice work, appeared on television, and experienced celebrity culture long before deciding what kind of musician he wanted to become.
His adult career has essentially reversed that process.
Rather than using music to become famous, Franklin has used music to establish who he is beyond the fame surrounding his family name.
Studying audio engineering, writing his own songs, producing recordings, releasing Sewer Rat, and eventually forming Franklin Jonas & The Byzantines have all contributed to that transformation.
The result is a career increasingly defined by songwriting and musicianship rather than simply family association.
Frequently Asked Questions About Franklin Jonas
How old is Franklin Jonas?
Franklin Jonas was born on September 28, 2000. He is 25 years old as of September 23, 2026, and turns 26 on September 28, 2026.
What is Franklin Jonas’ real name?
His full birth name is Franklin Nathaniel Jonas. He has also been widely known as Frankie Jonas.
Is Franklin Jonas related to the Jonas Brothers?
Yes. Franklin is the youngest brother of Kevin Jonas, Joe Jonas, and Nick Jonas.
Is Franklin Jonas part of the Jonas Brothers?
No. The Jonas Brothers consists of Kevin, Joe, and Nick Jonas. Franklin has his own musical career.
What does Franklin Jonas do?
Franklin Jonas is a singer, songwriter, producer, actor, and trained audio engineer.
What is Franklin Jonas’ debut EP?
His debut EP is Sewer Rat, released in 2023.
What band is Franklin Jonas in?
His current musical project is known as Franklin Jonas & The Byzantines, which explores an Americana-influenced sound combining traditional instrumentation with contemporary production.
Was Franklin Jonas in Ponyo?
Yes. Franklin voiced Sōsuke in the English-language version of Ponyo when he was a child.
Did Franklin Jonas make music with Noah Cyrus?
Yes. Franklin Jonas & The Byzantines released “High and Sad” with Noah Cyrus in 2026. The collaboration was particularly notable because Franklin and Cyrus had previously worked together as child voice actors on Ponyo.
Final Thoughts
Franklin Jonas has gradually transformed from the youngest member of a famous entertainment family into a musician with an increasingly distinct creative identity.
His journey has included childhood acting, voice work, audio-engineering training, independent songwriting, production, the Sewer Rat EP, and the formation of Franklin Jonas & The Byzantines.
While his relationship to Kevin, Joe, and Nick Jonas will always be an important part of his biography, Franklin’s adult work demonstrates a deliberate effort to establish his own musical language.
With Americana storytelling, introspective songwriting, traditional instrumentation, and modern production increasingly defining his sound, Franklin Jonas’ career is no longer simply a footnote to the Jonas Brothers story. It has developed into a separate chapter built around his own songs, experiences, and artistic direction.