Harper Willow Grohl is the middle daughter of Foo Fighters frontman Dave Grohl and film and television producer Jordyn Blum, and many fans first noticed her when she played drums on stage with her father’s band at age eight. Because she is still a teenager and her family keeps her private life out of the spotlight, a large share of what is written about her online is guesswork, recycled text, or simply incorrect. This article sticks to details confirmed by news agencies, interviews, and official album credits, and it clearly marks the points that remain unclear.
Quick Facts
| Detail | What is confirmed |
|---|---|
| Full name | Harper Willow Grohl |
| Date of birth | April 17, 2009 (announced by Dave Grohl at the time, as reported by the Associated Press) |
| Age as of October 2026 | 17 |
| Parents | Dave Grohl and Jordyn Blum, who married in 2003 |
| Sisters | Violet Maye Grohl (born 2006) and Ophelia Saint Grohl (born 2014) |
| Younger half-sibling | A baby girl born in 2024, announced by Dave Grohl; no name or other details are public |
| Known for | Drumming with Foo Fighters in 2017, plus backing vocals on “Your Favorite Toy” in 2026 |
| Birthplace | Not confirmed in the reliable sources reviewed |
| Net worth | Not publicly confirmed |
Who Is Harper Willow Grohl?
She is the second of three daughters born to Dave Grohl, the former Nirvana drummer who founded Foo Fighters, and his wife Jordyn Blum. The Grohls rarely appear together in public, but they did walk the red carpet as a family at the 2023 Grammy Awards, and Harper has also been photographed at industry events such as the 2022 MusiCares tribute to Joni Mitchell. Beyond those moments, most of what the public knows about her comes from stories her father has chosen to tell in interviews, on stage, and in his 2021 memoir.
Age and Birthday: Clearing Up the Confusion
Dave Grohl announced her birth shortly after it happened, telling reporters she arrived on April 17, 2009, weighing 7 pounds 8 ounces, and describing her as “loud as hell.” That means she turned 17 in April 2026 and will turn 18 in April 2027, at which point she will legally be an adult in the United States.
The confusion around Harper Willow Grohl’s age comes mostly from low-quality websites that copy each other. Some give the date as April 3, some list an age of 11 or 14 that was only correct years ago, and one page even claims she was born in January 2006, which is not her date at all. The April 17, 2009 date is the one supported by wire-service reporting and by major outlets that have profiled the family.
Family and Siblings
Her older sister Violet Maye was born on April 15, 2006, and has pursued her own singing career, while younger sister Ophelia Saint was born on August 1, 2014. Together the three girls make up the family Dave Grohl has described in interviews as intensely musical, with everyone playing an instrument or singing in some way.
In September 2024, Dave Grohl posted a statement on Instagram saying he had recently become the father of a baby daughter outside his marriage, that he planned to be a loving and supportive parent to her, and that he was working to regain the trust of his wife and children. He gave no information about the child’s mother or the baby herself, and his representatives declined further comment. Because of that, any name, birth detail, or story about the baby or her mother that appears online is unconfirmed, and Harper herself has not made any public statement on the matter.
Harper’s Music Moments
The 2017 Drum Debut
On June 16, 2017, Foo Fighters were headlining the Secret Solstice Festival in Reykjavik, Iceland, when late drummer Taylor Hawkins invited a surprise guest to the stage. Harper, then eight, took his seat and played the opening pattern of Queen’s “We Will Rock You” as the rest of the band joined in. Her father told the crowd of roughly 20,000 people that she had asked him for drum lessons only about two weeks earlier, and that this was the first song she had learned.
A Famous First Piano Lesson
In his memoir The Storyteller, Dave Grohl wrote that Paul McCartney gave Harper her first piano lesson when she was five years old. According to a People magazine summary of the book, Harper had never taken a lesson on any instrument at that point and simply watched McCartney’s hands before playing.
Viral Dance and Cover Art
A clip of Harper leading her seated father through a dance routine to Charli XCX’s song “Apple” went viral in 2024. Charli XCX watched it for the first time in February 2026 on The Graham Norton Show, where Foo Fighters were also promoting their new album. Parade also reported that Harper created the artwork for the band’s single “Today’s Song” in July 2025, and that the image was displayed on a billboard in London.
Backing Vocals in 2026
During a February 20, 2026 interview on BBC Radio 6 Music, Dave Grohl revealed that the young voice on the title track “Your Favorite Toy” belongs to Harper and a friend. He explained that he was recording at his home studio, his eldest daughter Violet was not around, and the two girls were about to leave for dinner when he asked them to sing a few lines. Harper is credited for backing vocals on the song in the liner notes of the album, which came out in April 2026.
Online Claims About Harper Willow Grohl That Do Not Hold Up
Searching for her name brings up many pages that look like biographies but read as auto-generated filler, often contradicting one another within the same paragraph. The table below lists the most common errors and what the reliable record shows.
| Claim found online | What reliable sources show |
|---|---|
| Her mother is Jennifer Youngblood | Youngblood was Dave Grohl’s first wife, whom he married in 1994 and divorced in 1997; Harper’s mother is Jordyn Blum |
| She acted in the film Lemonade Mouth | No reliable source supports this |
| She released an album called Harper Willow in 2023 | No such release by her exists in credible reporting |
| Exact height or weight figures | None have been published by credible sources, and the numbers on copied pages were typically written for her at a much younger age |
Why So Little About Her Is Public
Details such as her school, home, friendships, or relationships are not public, and there is no good reason for anyone to go looking for them. She is a minor until April 2027, and nearly everything credible about Harper Willow Grohl comes either from her father’s own comments or from events she attended openly. Pages that claim insider knowledge of her personal life should be treated as invented, since no official statement supports them.
Frequently Asked Questions
Is Harper Willow Grohl a member of Foo Fighters?
No. The band’s current drummer is Ilan Rubin, and Harper has only appeared as a guest, once on drums in 2017 and again on a backing vocal in 2026.
Is Harper the youngest Grohl daughter?
No. Several copied pages call her the youngest, but she sits in the middle of the three daughters Dave Grohl has with Jordyn Blum, and the baby announced in 2024 is younger still.
How did she get her name?
Dave Grohl said at her birth that she was named after his great-uncle, Harper Bonebrake, a detail that has been repeated in the Associated Press report and in later family profiles.
Does she have a public social media account?
No verified public account is known. Page Six reported in 2024 that she and her older sister had deactivated their Instagram profiles shortly after their father’s announcement, so accounts using her name today may be fan pages or fakes.
What is her net worth?
It is not publicly confirmed. Any dollar figure on a gossip site is an estimate with no stated source, and as a minor she has no disclosed earnings.
Does she plan to become a professional musician?
She has not made any public announcement about her future plans. Her father has said the whole family loves music, but nothing indicates a formal career path yet.
Conclusion
Harper Willow Grohl is best understood through the few moments that are well documented: a charming drum debut in Iceland, a famous piano lesson, a viral dance, some cover art, and a backing vocal on her father’s latest album. Everything else about her is either private or unverified, and that is a good reason to be cautious with any website that claims otherwise.
Disclaimer: This article is for general information only and is based on publicly available reports and statements as of October 27, 2026. Harper Willow Grohl is a minor, and her family’s private life is not public information. Details may change, and readers should rely on official statements from the family or its representatives for anything not covered here.
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