Molly Weasley I (née Prewett) (b. 30 October, 1949) was a pure-blood witch and the matriarch of the Weasley family, married to Arthur Weasley. She was born into the Prewett family, sister to Fabian and Gideon Prewett, members of the original Order of the Phoenix. They were both killed by Death Eaters in the First Wizarding War. Molly and Arthur had seven children; Bill, Charlie, Percy, twins Fred and George, Ron and Ginny.

Molly was a member of the revived Order of the Phoenix following the return of Lord Voldemort and participated in the final battle of the Second Wizarding War, known for the downfall of Death Eater Bellatrix Lestrange.