J.K. Rowling said Ron Weasley was inspired in part by her childhood friend Sean Harris.
Ron is Harry Potter’s best friend and one of the central members of the trio, alongside Harry and Hermione Granger. Rowling has described Harris as her closest friend during her teenage years and as an important influence on Ron’s personality. The fictional character is not a direct biography of Harris, but elements of loyalty, humour and friendship were drawn from that relationship.
Ron’s full name is Ronald Bilius Weasley, and he comes from a large wizarding family. His red hair, fear of spiders and strong sense of loyalty are recurring features across the novels. His friendship with Harry begins on the Hogwarts Express in the first book.
The connection is sometimes confused with other inspirations Rowling has discussed, including people who influenced characters’ names or traits. The specific childhood-friend link is associated with Sean Harris and Ron Weasley.