The content of this article is derived from notes and drafts of the Harry Potter books/films/games that were cut before being released. As such, the contents of the article may or may not be considered canonical.
Although her name is visible on J. K. Rowling's student list, Runcorn is not featured on the "Original Forty" list on Pottermore. As said list actually only features thirty-nine characters, Runcorn was presumably left out by mistake.
↑Runcorn is the only student seen on the Harry Potter and Me list not to be included in "The Original Forty" on Pottermore, presumably due to an error in transcription. The latter list is missing one female.