If you have ever drawn this tree yourself and ended up with Harry Potter hanging off the end of a branch, the short answer is simple: how the Weasley family tree works comes down to one couple and their seven children. Arthur and Molly Weasley are the trunk, three of their kids started families of their own, and the other two children you most expect to see on a chart are connected by wedding rather than by blood.
This guide is updated for 2026 and covers what the books state, what the films added, and where the records simply stop. No speculation dressed up as fact.
Table of Contents
- How the Weasley Family Tree Works at a Glance
- Who Starts the Weasley Family Tree?
- Who Are Arthur and Molly’s Children?
- How Do Bill, Charlie, and Percy’s Families Fit?
- What Happens to the Fred and George Branch?
- Where Do Ron and Ginny Fit in the Family Tree?
- Is Harry Potter Part of the Weasley Family?
- How Does the Weasley Family Tree Change Over Time?
- What Is the Simplest Way to Remember the Connections?
- Frequently Asked Questions
- What to Read First on the Family Tree
How the Weasley Family Tree Works at a Glance
Here is the whole documented tree in one table. Arthur and Molly Weasley are the couple every branch descends from.
| Child of Arthur and Molly | Born | Spouse or partner | Their children |
|---|---|---|---|
| Bill | 1970 | Fleur Delacour | Poppy |
| Charlie | 1972 | Lavender Brown | Hugo |
| Percy | 1976 | Penelope Clearbottom | Molly |
| Fred and George | 1978 | None in canon | None |
| Ron | 1980 | Hermione Granger | Rose |
| Ginny | 1981 | Harry Potter | James, Albus, Lily |
That is seven children and seven named grandchildren. Three of the seven children became parents, and the fourth generation runs through Poppy, Hugo, Molly, Rose, James, Albus and Lily.
Who Starts the Weasley Family Tree?
Arthur and Molly Weasley are the trunk of the tree. Everything most readers picture as the Weasley family descends from their marriage, and every documented branch above them runs through their parents.
Arthur’s parents were Septimus Weasley and Cedrella Black, née Black, the youngest daughter of Phineas Nigellus Black and Ursula Flint. Cedrella is the reason the family keeps bumping into the Blacks, since her sister Walburga is the mother of Bellatrix, Andromeda and Narcissa, and her own first cousin is Sirius Black.
Molly’s brothers were Fabian and Gideon Prewett, both members of the Order of the Phoenix who were killed by Death Eaters in the first war, which is why Harry spends so much of his childhood at the Burrow rather than with relatives.
Below Arthur and Molly, the books go quiet. No grandparents, no aunts and uncles by marriage, no great-grandparents are named, so the tree has a firm top and a firm bottom but very little middle distance.
What we know and what we do not
Two broad rules help here. Anything the novels and Philosopher’s Stone state is core canon. Anything from the stage play, the video games or Rowling’s old website is a layer on top, useful but not identical to the books. The official Wizarding World site is a good, readable middle ground, and the Harry Potter Lexicon is the reference fans trust most for chapter-level detail.
Who Are Arthur and Molly’s Children?
Arthur and Molly have seven children: Bill, Charlie, Percy, Fred, George, Ron and Ginny. Birth order is the single most quiz-tested fact about this family.
Bill, Charlie and Percy are the eldest three
Bill arrived in December 1970 and works as a Curse-Breaker at Gringotts. Charlie, born in 1972, spends his time on dragon breeding, which pays for a lot of hand-me-down robes. Percy, born in 1976, is the ambitious one, working his way up the Ministry of Magic.
Fred and George are the twins
Fred and George were born in 1978, minutes apart, with Fred the elder by a couple of minutes. They run Weasleys’ Wizard Wheezes together and are the reason the family is famous outside wizarding Britain.
Ron and Ginny are the youngest
Ron was born in 1980, the same year as Harry, which is why they end up at Hogwarts together despite arriving on different trains. Ginny, born in 1981, is the youngest of the seven and the only girl.
How Do Bill, Charlie, and Percy’s Families Fit?
The three eldest sons produced the three branches that carry the tree into a fourth generation.
Bill married Fleur Delacour, and their daughter is Poppy Weasley. Fleur is French, from a family with its own Veela connections, and she is about three years younger than Bill. Poppy is the first Weasley of the next generation to be born during the main series.
Charlie married Lavender Brown, and their son is Hugo. Lavender is a half-Vietnamese Muggle-born who met Charlie at Hogwarts. Hugo is roughly two years older than Rose, which is often the detail that trips people up when they try to sort the cousins by age.
Percy married Penelope Clearbottom, a colleague from the Ministry, and their daughter is Molly Weasley. That name causes constant trouble, so be precise: this Molly is Arthur and Molly’s granddaughter, while Molly Prewett is Arthur’s wife and the girl’s grandmother. Same first name, two different women, one generation apart.
What Happens to the Fred and George Branch?
The Fred and George branch ends with them. Neither marries and neither has children in any canon source, so no fourth generation descends from the twins.
What they do leave behind is a business. Weasleys’ Wizard Wheezes opens in Diagon Alley with help from Ron, and the twins’ invention work runs through the whole series, from the joke telescopes to the automatic answering service. A branch with no heirs can still be the branch everyone remembers.
One persistent myth needs clearing out. The idea that George has a daughter who is a genius at reading rooms was never in the books, and the official Wizarding World site has treated it as a joke about a joke for years.
Where Do Ron and Ginny Fit in the Family Tree?
Ron and Ginny are the bridge between the original generation and the story’s main cast. Ron marries Hermione Granger, and Ginny marries Harry Potter, so two of the seven children marry people most readers arrived the series through.
Ron and Hermione’s daughter is Rose, born around the time of the Battle of the Lake and named after a Granger grandmother. Harry and Ginny have three children by the end of the epilogue: James Sirius, Albus Severus and Lily Luna.
Neither of these marriages keeps the Weasley name in the usual sense. Hermione keeps Granger, so Rose is usually called Rose Granger-Weasley. Harry takes the Potter name, so his children are Potters. In both cases the Weasley connection survives through the family rather than the surname.
How the Weasley family tree works after the wedding
Once a wedding joins two families, the chart changes shape in a way most diagrams do not show. Children of a marriage belong to both sides, and the surname on the tree is a choice rather than a fact. That is why it is worth reading a family tree by asking one question at every line: which side was this person born into?
Is Harry Potter Part of the Weasley Family?
No. Harry is related to the Weasleys by marriage only, through his wedding to Ginny. There is no blood link between the Potters and the Weasleys anywhere in the books.
What Harry has instead is history. Molly Weasley was Lily Potter’s closest friend, which is why Harry ends up at the Burrow every summer, why Molly treats him as family rather than as a guest, and why she sends him one of the Weasley clocks for his thirteenth birthday. That clock shows where each family member is at any moment, which is why it works so well as a symbol of a family that keeps track of itself.
So Harry is a Weasley by marriage and a Potter by blood, which makes the Weasleys his in-laws and Ginny his wife. That split between descent and connection is exactly how the Weasley family tree works when you follow a wedding instead of a birth, and it is why a family tree and a relationship chart are not the same thing. Harry belongs on the second one.
How Does the Weasley Family Tree Change Over Time?
A family tree is a record of events, so reading one chronologically explains far more than staring at a static diagram. Here is the documented sequence.
| When | What happens to the family |
|---|---|
| Before 1970 | Arthur and Molly marry. Molly’s brothers Fabian and Gideon are killed by Death Eaters during the first war. |
| 1970-1976 | Bill, Charlie and Percy are born. |
| 1978 | Fred and George are born, minutes apart. |
| Around 1980 | Ron is born, the same year as Harry. Arthur’s father Septimus dies. |
| 1981 | Ginny is born, the youngest of the seven. |
| 1996-1997 | Fred and George open Weasleys’ Wizard Wheezes in Diagon Alley, with Ron as their partner. |
| 1995-1996 | Harry and Ginny fall for each other. Molly is killed by Bellatrix in her bedroom at the Burrow. |
| 1998 | Fred is killed by George’s rebound curse. Bill and Fleur marry, and Harry and Ginny marry soon after. |
| 2006-2008 | Rose is born around the Battle of the Lake, followed by James, Albus and Lily. |
| The stage play era | The Cursed Child picks the story up with Albus and Rose as teenagers, pushing the family into a fifth generation. |
Two dates anchor everything for most readers: Molly’s death in 1996 and Fred’s in 1998. After 1998 the family loses its mother and one of the twins, and Bill and Charlie become the heads of the household in practice.
What Is the Simplest Way to Remember the Connections?
Group the family into three buckets and the whole thing sticks. Bucket one is Arthur and Molly’s seven children, in birth order: Bill, Charlie, Percy, Fred, George, Ron, Ginny. That is the row everyone has to memorise.
Bucket two is the households with children: Bill and Fleur with Poppy, Charlie and Lavender with Hugo, Percy and Penelope with Molly. Three couples, three children, three separate branches.
Bucket three is the marriage connections: Ron and Hermione with Rose, and Harry and Ginny with James, Albus and Lily. If a name is in bucket three and you cannot place it by blood, it is connected through a wedding.
Anything left over is either an ancestor above the tree, such as Cedrella Black, or a relative by marriage such as Aunt Muriel and Uncle Bilius, who visit the Burrow and are mentioned far more than they are explained. Once the three buckets are in place, how the Weasley family tree works stops being a puzzle.
Frequently Asked Questions
How many children does the Weasley family have?
Arthur and Molly Weasley have seven children: Bill, Charlie, Percy, Fred, George, Ron and Ginny. Bill is the eldest, born in 1970, and Ginny is the youngest, born in 1981. Fred and George are identical twins born in 1978, with Fred a few minutes older. No eighth child appears in the books, the films or the stage play.
Who are the Weasley family’s grandchildren?
The books name seven grandchildren. Poppy is the daughter of Bill and Fleur Delacour, Hugo the son of Charlie and Lavender Brown, and Molly the daughter of Percy and Penelope Clearbottom. Rose is the daughter of Ron and Hermione Granger, and James Sirius, Albus Severus and Lily Luna are the children of Harry and Ginny. Fred and George have no children.
Are Harry Potter and the Weasleys related by blood?
No. There is no blood relation between Harry and the Weasley family anywhere in the canon. He is connected through his marriage to Ginny Weasley, which makes the Weasleys his in-laws. The closeness comes from history instead: Molly Weasley was Lily Potter’s best friend, Harry spent every summer at the Burrow, and Molly even sent him a Weasley clock for his thirteenth birthday.
Which Weasley does not have children?
Both Fred and George, along with the rest of the family members who never married. No canon source gives either twin a spouse or a child, so the twin branch of the family tree ends with them. Their legacy continues through Weasleys’ Wizard Wheezes and the inventions Ron helps them sell, rather than through heirs.
Are Ginny and Ron Weasley’s only married siblings?
No, though they are the two most famous marriages. Bill married Fleur Delacour, Charlie married Lavender Brown and Percy married Penelope Clearbottom. Ron married Hermione Granger and Ginny married Harry Potter, making all five of the seven children married in the main canon, and leaving only Fred and George without a spouse.
Are the Weasleys pure-blood, and how are they related to the Blacks?
The Weasleys are pure-blood and counted among the Sacred Twenty-Eight, though Arthur was falsely branded a blood traitor for his work with the Order of the Phoenix, which cost him a Gringotts vault. The Black connection runs through Arthur’s mother, Cedrella Black, whose sister Walburga is the mother of Bellatrix, Andromeda and Narcissa, and whose own first cousin is Sirius Black.
What to Read First on the Family Tree
Start with the at-a-glance table. Once you can recite the seven children in order, the rest is three households and two weddings. From there, follow the branches one at a time: Bill and Fleur, then Charlie and Lavender, then Percy and Penelope, then Ron and Hermione, then Harry and Ginny.
When a diagram or a wiki page puts someone on the family tree, ask one question before you believe it: is that line blood or marriage? Nine times out of ten, that is the whole confusion. And for 2026, the core of the answer has not changed in twenty-five years of new books, films, games and one stage play.
