Arthur Weasley (b. Feb. 6, circa 1950)
Molly Weasley (b. Oct. 30, circa 1950)
Bill Weasley (b. Nov. 29, 1970)
Charlie Weasley (b. Dec. 12, 1972)
Percy Ignatius Weasley (b. Aug. 22, 1976)
Fleur (Delacour) Weasley (b. circa 1977)
One of the four Triwizard champions; with husband Bill Weasley she had
three children: Victoire, Dominique and Louis Weasley. (More...)
Fred Weasley (April 1, 1978 - May 2, 1998)
Twin with George. (More...)
George Weasley (b. Apr. 1, 1978)
Twin with Fred, husband of Angelina (Johnson) Weasley (YL). (More...)
Angelina (Johnson) Weasley (b. late October, 1977)
Gryffindor (1989- 1996) Quidditch Chaser, captain (1995 - 1996).
Later in life, Angelina married George Weasley and had two children, Fred and Roxanne (YL).
Angelina probably took the Weasley name when she married George, but this is not certain.
Audrey Weasley
Wife of Percy Weasley (YL).
Hermione (Granger) Weasley (b. Sept. 19, 1979)
Best friend of Harry Potter and wife of Ron Weasley. (More...)
Hermione probably took the Weasley name when she married Ron, but this is not certain.
Ronald "Ron" Bilius Weasley (b. Mar. 1, 1980)
Sixth son of Molly and Arthur, and the best friend of Harry Potter; husband of Hermione (Granger) Weasley (DH/e). (More...)
Ginevra "Ginny" Molly Weasley (b. Aug. 11, 1981)
Seventh and youngest child of Molly and Arthur; She is the "first girl to be born into the Weasley clan for several generations." (JKR). Wife of Harry Potter (DH/e). (More...)
Victoire Weasley (b. May 2, circa 1999 or 2000)
Hogwarts c. 2011. Victoire is the daughter of Bill and Fleur Weasley. Harry’s son, James, caught Victoire snogging Teddy Lupin on Platform 9 ¾ as she was preparing to leave for what was most likely her seventh year at Hogwarts; at the time she would probably have been seventeen, and Teddy nineteen (DH/e). She was born on May 2nd, the anniversary of the victory over Voldemort (YL).
Dominique Weasley
Middle child of Bill & Fleur Weasley, this name could belong to either a boy or a girl (YL).
Louis Weasley
Youngest child of Bill & Fleur Weasley (YL).
Rose Weasley (b. circa 2006)
Rose is the older of Ron and Hermione’s two children, and their only daughter. On 1 September 2017, Rose was preparing to take the Hogwarts Express to her first year at school, and was rather nervous about whether she’d be sorted into Gryffindor (DH/e).
Hugo Weasley (b. circa 2006-2009)
The younger of Ron and Hermione’s two children, Hugo seems to be good friends with Lily Potter (DH/e).
In the epilogue to Harry Potter and the Deathly Hallows which takes place September of 2017, Hugo was not yet old enough to attend Hogwarts, but instead hangs out laughing with Lily on Platform 9 ¾ while his older sister, Rose, prepares to depart for her first year at Hogwarts. Though we don’t know his exact age, Lily Potter was nine at the time, and it’s likely the two of them were within a year or so of each other’s age. This would place Hugo’s birth roughly between 2006 and 2009, and his first year at Hogwarts at circa 2019 (DH/e).
Molly Weasley
Eldest daughter of Percy & Audrey Weasley (YL).
Lucy Weasley
Youngest daughter of Percy & Audrey Weasley (YL).
Fred Weasley
Eldest son of George & Angelina Weasley (YL).
Roxanne Weasley
Youngest daughter of George & Angelina Weasley (YL).
Other relatives:
* Arthur's two (unnamed) brothers (JKR). Is Bilius one of them?
* accountant cousin of Mrs. Weasley - a Muggle accountant who isn't spoken of by the Weasley family (PS6). He or she would actually be a Prewett relative.
* Bilius - uncle to Ron who supposedly saw a Grim and died, twenty-four hours later (PA6). Fred missed him at Bill and Fleur's wedding, saying he always good for a laugh (DH8).
* Lancelot - Great Auntie Muriel's cousin who was a Healer at St. Mungo's (DH8). He is not a Weasley (DH4), but he may not be a Prewett either.
* Mafalda (non-canon; see "Mafalda" below)
* Muriel - Molly's aunt (DH4) and Ron & Ginny's great aunt. She has a lovely "goblin-made" tiara and is apparently is a memorable kisser (HBP14, 29). Muriel is not a Weasley, but as the sister or the sister-in-law of one of Molly's parents, she may not be a Prewett either. Many thanks to Yvonne B. who pointed this out.